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2021 Honda Ridgeline Recalls, Issues & Maintenance

The 2021 Honda Ridgeline carries 7 open NHTSA recalls — most recently covering retractor and exterior. Owners report 7 recurring issue clusters, led by “Engine limp mode after highway driving in cold weather.” Honda vehicles use the Maintenance Minder system — your dashboard displays a Code A (oil change) or Code B (oil change plus inspections) along with sub-codes 1-6 for additional services. Intervals adjust based on how you drive. The schedule below reflects Honda's underlying targets.

7 Open Recalls

Source: NHTSA

SEAT BELTS:REAR/OTHER:RETRACTOR

Campaign #21V900000 · Nov 18, 2021

Issue: Honda (American Honda Motor Co.) is recalling certain 2021 Accord Sedan, Accord Hybrid, CR-V, Ridgeline, 2022 Insight and CR-V Hybrid vehicles. The automatic locking retractor on the second-row center seat belt assembly may deactivate improperly, which can result in an unsecured child restraint system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

Risk: An unsecured child restraint system can increase the risk of injury during a crash.

Fix: Dealers will replace the second-row center seat belt assembly, free of charge. Owner notification letters were mailed January 14, 2022. Owners may contact Honda customer service at 1-888-234-2138.

VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR

Campaign #23V174000 · Mar 16, 2023

Issue: Honda (American Honda Motor Co) is recalling certain 2020-2021 Pilot and Ridgeline, and 2020-2022 Passport and Odyssey vehicles. The heating pads behind both side-view mirrors may not be bonded properly, allowing the mirror glass to detach. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."

Risk: Detached mirror glass can reduce driver visibility, increasing the risk of a crash.

Fix: Dealers will replace both left and right side-view mirrors, free of charge. Owner letters were mailed January 17, 2024. Owners may contact Honda customer service at 1-888-234-2138. Honda's number for this recall is FE5.

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

Campaign #23V458000 · Jun 29, 2023

Issue: Honda (American Honda Motor Co.) is recalling certain 2020-2021 Civic, 2020-2023 Ridgeline, 2021-2023 Passport, 2021-2022 Pilot, and 2020 Acura MDX vehicles. The tie rod fastener that connects the brake booster and the brake master cylinder may have been improperly assembled during manufacturing, which can cause the brake master cylinder to separate from the booster assembly.

Risk: Brake master cylinder separation can cause a loss of brake function and increase the risk of a crash.

Fix: Dealers will inspect and repair the brake booster assembly as necessary, free of charge. Owner notification letters were mailed August 7, 2023. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are VEU, AEV, and ZET.

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

Campaign #24V064000 · Jan 2, 2024

Issue: Honda (American Honda Motor Co.) is recalling certain 2020-2022 Pilot, Accord, Civic sedan, HR-V, Odyssey, 2020 Civic coupe, Fit, 2021-2022 Civic hatchback, 2021 Civic Type R, Insight, 2020-2021 CR-V, CR-V Hybrid, Passport, Ridgeline, Accord Hybrid, 2020 Acura MDX, 2022 Acura MDX, 2020-2022 Acura RDX, and 2020-2021 Acura TLX vehicles. The front passenger seat weight sensor may crack and short circuit, failing to suppress the air bag as intended.

Risk: An air bag that deploys unintentionally during a crash can increase the risk of injury.

Fix: Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed March 28, 2024. This is a phased recall. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for these recalls are XHP and VHQ.

BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

Campaign #24V321000 · Sep 5, 2024

Issue: Honda (America Honda Motor Co) is recalling certain 2020-2024 Ridgeline vehicles. The rearview camera (RVC) tailgate wire harness may fatigue and break, which can prevent the rearview camera image from displaying.

Risk: A rearview camera that does not display an image can reduce the driver's rear view, increasing the risk of a crash.

Fix: Dealers will replace the RVC tailgate wire harness, free of charge. Owner letters were mailed November 8, 2024. Owners may contact Honda service at 1-888-234-2138. Honda's number for this recall is YI7.

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

Campaign #26V332000 · May 21, 2026

Issue: Honda (American Honda Motor Co.) is recalling certain 2018-2021, 2023 Acura TLX, 2019-2024 RDX, 2017-2020, 2022-2026 MDX, 2017-2021, 2023, 2025 Honda Ridgeline, 2017-2022 Pilot, 2019-2021 Passport, 2018-2026 Odyssey, 2019-2022 Insight, 2019-2021 HR-V, 2018-2020 Fit, 2020-2022 CR-V Hybrid, 2017-2022 CR-V, 2017-2018, 2021 Civic Type R, 2017-2021 Civic hatchback, 2016-2020 Civic coupe, 2016-2022 Civic, 2017-2022 Accord Hybrid, and 2016-2022 Accord vehicles. The front passenger seat weight sensor may crack and short circuit, which can cause the air bags to deploy unintentionally during a crash.

Risk: Air bags that deploy unintentionally during a crash increase the risk of injury.

Fix: Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed July 7, 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are BOL, WO9, OOA, WOM, XOH, NOC, POD, BOE, UOF, POB, EOG, AOI, QO8, TOJ, DO7, and SOK. This recall expands previous NHTSA recall number 24V064. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning May 29, 2026.

STRUCTURE:FRAME AND MEMBERS

Campaign #26V365000 · Apr 6, 2026

Issue: American Honda Motor Company (Honda) is recalling certain 2016-2022 Honda Pilot, 2017-2023 Ridgeline, 2019-2023 Passport, and 2014-2020 Acura MDX vehicles that were sold in Connecticut, Delaware, District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, Virginia, West Virginia, or Wisconsin. The rear subframe may corrode at the suspension mounting points, which can result in rear suspension component failure.

Risk: Failure of rear suspension components, such as the rear control arm, can cause a loss of vehicle handling and control, increasing the risk of a crash or injury.

Fix: Dealers will inspect the rear subframe and install a rear subframe reinforcement kit and, as necessary, repair or replace the rear subframe components, free of charge. Interim letters notifying owners of the safety risk were mailed July 27, 2026. Additional letters will be sent once the final remedy is available, anticipated in the fall of 2026. Owners may contact Honda's customer service at 1-888-234-2138. Honda's numbers for this recall are AOU and AOT. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov beginning June 10, 2026.

Recall data refreshed Sep 6, 2026.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2021 Honda Ridgeline.

1 active NHTSA investigation

Source: NHTSA

  • No Restart After Auto Start/Stop Engages

    Action #EA25004 · opened Mar 26, 2025

    On June 3, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE22005 after the agency received VOQs and several field reports concerning the Auto Idle Stop (AIS) feature on 2016-2019MY Honda Pilot vehicles. The complaints allege that the engine fails to r…

    View on NHTSA →

Reported to NHTSA

Engine limp mode after highway driving in cold weather

ENGINE, POWER TRAIN, FUEL/PROPULSION SYSTEM

16 NHTSA complaints · 2021-04 → 2024-12

“After driving on highway for an hour and a half at 80mph, I exited the highway and as soon as I pulled onto a secondary road the check engine light started flashing and the engine was hesitating with little to no power and poor shifting. I limped it to safe place to pull over”
— Owner report, NHTSA ODI #11449572
“Upon exiting or entering the highway, the truck loses power and will not accelerate. This happens after multiple hours of highway driving and seems to only happen when the temperature is near or below freezing. The Check Engine Light (CEL) comes on and is flashing. This has…”
— Owner report, NHTSA ODI #11456074
“When driving at 70mph for a couple of hours and exiting the freeway, the truck will go into limp mode and won’t accelerate. This only happens when it’s very cold, less than 10 degrees Fahrenheit both times it happened to me. The engine service light will start to flash”
— Owner report, NHTSA ODI #11498322

Read all complaints on NHTSA →

Engine connecting rod bearing failure

ENGINE AND ENGINE COOLING

7 NHTSA complaints · 2025-01 → 2026-02

“I began to hear a knocking noise at 2500 to 3500 rpms and I immediately took my vehicle to the dealer who confirmed rod bearing damage”
— Owner report, NHTSA ODI #11695599
“The contact stated that while her husband was driving 55 MPH, the vehicle went into LIMP Mode and made an abnormal knocking sound. The check engine warning light was illuminated. The driver was able to pull over to the side of the road. The vehicle was towed to the dealer, where…”
— Owner report, NHTSA ODI #11703807
“The contact stated that while driving approximately 30 MPH, there was a knocking sound coming from the engine compartment while accelerating and there was a loud popping sound coming from the engine compartment shortly afterwards. The low oil level warning light was illuminated”
— Owner report, NHTSA ODI #11638882

Read all complaints on NHTSA →

Multipurpose camera unit internal electronic failure

FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

7 NHTSA complaints · 2024-01 → 2026-08

“The Multipurpose Camera had an Internal Electronic Failure. Indications we all of the warning lights were illuminated on my dash. Initially it began when I had about 43, 400 miles on my truck. The warning lights would all remail lighted on starting the vehicle. I could restart…”
— Owner report, NHTSA ODI #11694352
“Dealer scanned the vehicle with a code U300-40 Multipurpose Camera Unit/Millimeter Wave Radar Internal Electronic Failure, and diagnosed a failure of the multipurpose camera, which was then replaced and recalibrated. I have retained the failed unit after paying to have the…”
— Owner report, NHTSA ODI #11636846
“My 2021 Honda Ridgeline Sport experienced failure of the forward-facing Honda Sensing camera system. This camera controls safety features including Collision Mitigation Braking, Lane Keeping Assist, and Adaptive Cruise Control. The failure disables safety assistance features”
— Owner report, NHTSA ODI #11750429

Read all complaints on NHTSA →

Auto idle stop failure to restart engine

ENGINE

8 NHTSA complaints · 2022-11 → 2026-08

“The auto start/stop function fails to restart the truck after stopping. I has in the middle of an intersection waiting to turn left. The auto stop turned off the engine. When I let go of the brake the truck failed to restart. I was stuck in the middle of the intersection…”
— Owner report, NHTSA ODI #11497195
“As I came to a stop at the light, the truck entered the Auto Idle Stop. When the light turned green and it was time to accelerate, I released my foot off of the brake and the engine stopped. It cut out right there. Warning lights came on and I had to restart the engine by…”
— Owner report, NHTSA ODI #11754528
“MY CAR IS EQUIPE WITH A IDLE STOP START ASSITANT AND IN 3 OCASIONS DID NOT RESTAR THE VEHICLE AFTER STOPING ON A RED LIGHT, I HAVE TO PUT THE CAR IN PARKING AND THEN TRY TO RE-START THE VEHICLE TRIYING 1 OR 2 TIME UNTIL STARTS UP”
— Owner report, NHTSA ODI #11622518

Read all complaints on NHTSA →

Automatic high beam headlight erratic operation

EXTERIOR LIGHTING

13 NHTSA complaints · 2021-04 → 2025-09

“WHILE DRIVING AT NIGHT EVEN WITH NO TRAFFIC AHEAD, THE AUTOMATIC HIGH BEAMS RARELY TURN ON. WHEN THEY DO, THEY TURN OFF ALMOST IMMEDIATELY DUE TO REFLECTIONS FROM ROAD SIGNS AND EVEN SMALL ROAD MARKERS. OCCASIONALLY, THEY'LL FAIL TO DIM IN A TIMELY FASHION OR WILL FLASH CAUSING…”
— Owner report, NHTSA ODI #11407040
“Hi-beam lights will activate for a few seconds and then turn off for about 10 seconds and continually repeat the sequence regardless of road specifics. A few times, the headlights have flashed oncoming vehicles less than 100 feet away. I have taken the vehicle in for repair…”
— Owner report, NHTSA ODI #11469709
“The automatic high beam functionality, and it is available for inspection 2) Safety of others is out at risk, as the automatic high beams will turn on even if an incoming car is detected, and in most cases will flash off and on automatically with oncoming traffic, resulting in…”
— Owner report, NHTSA ODI #11494805

Read all complaints on NHTSA →

Backup camera failure and recall part unavailability

BACK OVER PREVENTION

8 NHTSA complaints · 2024-03 → 2024-11

“Rear view camera failed. Only shows a black screen, same symptoms of the 2017-2020 Honda Ridgeline recall. Contacted Honda and was told it wasn’t covered and to pay to get it fixed. 2021 Ridgeline with 47,000 miles. I’m aware NHTSA has received 27 other complaints as well based…”
— Owner report, NHTSA ODI #11575317
“The contact received a notification of NHTSA Campaign Number: 24V321000 (Back Over Prevention) however, the part to do the recall repair was not yet available. The contact stated that occasionally while in reverse, the reverse camera image display would flicker a distorted image”
— Owner report, NHTSA ODI #11619957
“3/4/2024. Backup camera failure. Black screen. Located broken wires in wiring harness. Same location as those in earlier recall”
— Owner report, NHTSA ODI #11575571

Read all complaints on NHTSA →

Forward collision system false warnings and unintended braking

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

5 NHTSA complaints · 2021-05 → 2024-04

“I have a 2021 Honda Ridgeline Sport equipped with CMBS an automatic braking system that is supposed to be a safety feature, but actually makes the car more dangerous. The problem with the Ridgeline Sport collision mitigation braking system is that it attempts to mitigate…”
— Owner report, NHTSA ODI #11418436
“While driving on a 4 lane road with a passing lane the automatic emergency braking system started slowing the vehicle down for a vehicle in the left hand turning lane. It was not directly in front of me. The warning tone and BRAKE flashing alarm come on frequently when driving…”
— Owner report, NHTSA ODI #11583549
“The forward collision system frequently goes off from a vehicle simply driving in their lane normally. The truck alarms, shakes the wheel, and sometimes brakes automatically. This is alarming for my kids riding in the car and the braking is dangerous for cars behind me. This…”
— Owner report, NHTSA ODI #11686830

Read all complaints on NHTSA →

Note: NHTSA also opened 1 defect investigation(s) on this vehicle that closed without action.

Issues on other model years

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 11, 2026. Investigation data refreshed Sep 11, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Essential maintenance

Critical for safety and preventing major damage

Engine Oil & Filter (Code A)

Every 7,500 mi

Replace 0W-20 full-synthetic oil and filter. The Maintenance Minder triggers Code A between 7,500 and 10,000 miles depending on driving conditions.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

Tire Rotation (Sub-code 1)

Every 7,500 mi

Rotate tires front-to-back to even out wear. Honda triggers Sub-code 1 alongside every other oil change.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

Brake Inspection (Code B)

Every 15,000 mi

Inspect brake pads, rotors, and parking brake. Code B includes a multi-point inspection of brakes, suspension, and fluids.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

Brake Fluid (Sub-code 5)

Every 45,000 mi

Replace DOT 3 brake fluid every 3 years regardless of mileage to prevent moisture absorption and corrosion of ABS components.

Estimated cost — typical U.S. ranges

Dealer

~$180–$200

Shop

~$125–$140

DIY

~$10–$25

DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.

Important maintenance

Keeps your vehicle running smoothly and efficiently

Automatic Transmission / CVT Fluid (Sub-code 3)

Every 30,000 mi

Replace ATF or CVT fluid. Honda CVT models (Civic, HR-V, Accord LX) use Honda HCF-2 — do not substitute. The Maintenance Minder triggers earlier under heavy stop-and-go.

Estimated cost — typical U.S. ranges

Dealer

~$330–$500

Shop

~$235–$355

DIY

~$60–$180

Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.

Rear Differential Fluid (AWD models, Sub-code 5)

Every 30,000 mi

AWD CR-V, Pilot, Passport, Ridgeline: replace rear diff fluid every 30,000 miles, sooner if towing.

Estimated cost — typical U.S. ranges

Dealer

~$150–$195

Shop

~$105–$135

DIY

~$20–$50

Drain plug + fill plug — straightforward DIY. AWD vehicles have two; budget for both.

Engine Air Filter (Sub-code 4)

Every 30,000 mi

Replace the engine air filter every 30,000 miles. Honda uses a long-life cellulose element on most port-injected engines.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

Spark Plugs (Sub-code 6)

Every 105,000 mi

Honda uses iridium-tipped plugs rated for 100,000+ miles. Replace at 105,000 miles or whenever Sub-code 6 displays.

Estimated cost — typical U.S. ranges

Dealer

~$285–$390

Shop

~$200–$275

DIY

~$25–$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.

Engine Coolant (Sub-code 5)

Every 60,000 mi

Honda Long-Life Type 2 (blue) coolant: first change at 120,000 miles, then every 60,000 miles. Do not mix with other coolant types.

Estimated cost — typical U.S. ranges

Dealer

~$285–$330

Shop

~$200–$235

DIY

~$25–$60

Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.

Recommended maintenance

Extends the life of your vehicle and improves comfort

Cabin Air Filter (Sub-code 3)

Every 15,000 mi

Replace the cabin air filter — accessible behind the glove box on most Hondas. Honda recommends 15,000 miles in dusty conditions, longer in clean climates.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

Valve Clearance Adjustment (Sub-code 6)

Every 105,000 mi

Inspect and adjust valve clearances at 105,000 miles. Critical on K-series and L-series engines to prevent valve recession.

Estimated cost — typical U.S. ranges

Dealer

~$495–$535

Shop

~$345–$375

DIY

Pro only

Mechanical-bucket valvetrains (many Honda 4-cyls, older Toyotas) need this. Hydraulic lifters don't. Shop work — feeler-gauge precision required.

Timing Chain — No Replacement

On condition / lifetime

Modern Honda engines (K-series, L-series, R-series, plus all Earth Dreams 1.5T and 2.0T) use a timing chain designed to last the life of the engine. No scheduled replacement.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Pro only

Timing chains are normally lifetime. Listen for rattle on cold start — that's the actionable signal. Replacement is major work, quote separately.

Fatal crash history & reported problems

Occupant deaths in fatal crashes (FARS)

2 crashes 2010–2024

FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number

Owner-reported problem signals

Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.

3

complaints mentioning a crash

0

complaints mentioning a fire

Reviewed known issues for this vehicle·Open recalls for this vehicle

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2021 Honda Ridgeline reflects Honda's published service intervals and the Maintenance Minder system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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