The 2021 Passport shares Honda's 3.5L V6 and 9-speed automatic with the Pilot, inheriting both its strengths and a handful of recurring weak points. Most issues center on transmission behavior, fuel delivery, and some unfortunate piston/ring failures that show up earlier than expected.
Premature Piston Ring Failure / Oil Consumption
Occasional · high severity
Typical onset: 40,000-80,000 mi
Symptoms: Excessive oil consumption (1+ quart per 1,000 mi), Blue smoke on cold start or under load, P0300-P0306 misfire codes, Fouled spark plugs
Fix: Engine teardown reveals carbon-fouled rings or scored cylinder walls. Often requires complete short block replacement or full engine rebuild with new pistons, rings, and honing. 18-24 hours labor depending on shop access and component availability. Honda has extended warranty coverage on some VINs—check service bulletins first.
Estimated cost: $6,000-9,500
9-Speed Transmission Shudder and Harsh Shifts
Common · medium severity
Typical onset: 30,000-70,000 mi
Symptoms: Vibration or shudder during 2-3 or 3-4 upshifts at low speed, Harsh downshifts when slowing, Delayed engagement from Park to Drive, Occasional flare or slip between gears
Fix: Start with fluid exchange using Honda ATF DW-1 (spec critical). If shudder persists, torque converter replacement is common, sometimes alongside updated valve body or clutch packs. Transmission oil cooler lines can also leak and starve the trans. 8-12 hours for torque converter, additional time if valve body is involved.
Estimated cost: $2,800-4,500
Fuel Pump Failure (NHTSA Recall)
Occasional · high severity
Symptoms: Engine stalls while driving, often at highway speed, No-start condition after fueling or hot soak, Rough idle, hesitation under acceleration, Check engine light with fuel pressure codes (P0087, P0191)
Fix: Defective low-pressure fuel pump impeller cracks or swells, causing loss of fuel delivery. Covered under recall 21V-384—dealer replaces pump assembly at no cost. If out of recall eligibility, pump replacement is 3-4 hours (tank drop required).
Estimated cost: $800-1,200
Front Brake Master Cylinder Fluid Leak (NHTSA Recall)
Rare · high severity
Symptoms: Brake pedal sinks slowly to floor when held, Low brake fluid warning light, Fluid seepage visible at master cylinder body, Reduced braking power
Fix: Secondary piston seal in master cylinder can leak internally or externally. Covered under recall 21V-548—dealer replaces master cylinder. Outside recall, 2-3 hours including fluid flush and bleed.
Estimated cost: $600-900
Transmission Oil Cooler Line Leaks
Occasional · medium severity
Typical onset: 50,000-90,000 mi
Symptoms: ATF puddle under front of vehicle, Low transmission fluid level, Burnt fluid smell, Transmission slipping or overheating warning
Fix: Cooler lines from transmission to radiator can corrode or crack at fittings, especially in salt-belt states. Lines are steel with rubber sections—replace both sides. 2-3 hours labor, requires fluid refill and leak check.
Estimated cost: $400-750
Passenger Occupant Sensor False Warnings
Occasional · low severity
Symptoms: Airbag warning light on dash, Passenger airbag OFF indicator stays lit with adult in seat, Intermittent warnings, especially in cold weather
Fix: Occupant classification system sensor mat under passenger seat can fail or give false readings. Covered under recall 21V-897—dealer recalibrates or replaces sensor. Outside recall, seat removal and sensor replacement is 1.5-2 hours.
Estimated cost: $300-600
Owner tips
Change transmission fluid every 30,000 mi with Honda DW-1 ATF only—no substitutes, even 'universal' fluids cause shudder.
Monitor oil level every 1,000 mi during first 60k to catch ring issues early—Honda may goodwill engine work if documented.
Check for open recalls by VIN at Honda's owner site—fuel pump and master cylinder are safety-critical.
Use Top Tier fuel to minimize carbon buildup on intake valves and piston crowns—direct injection makes this engine sensitive.
Solid utility and Honda refinement, but the piston ring lottery and transmission quirks make a pre-purchase inspection and remaining powertrain warranty non-negotiable for used buyers.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER · 24V064000
2024-02-01
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.
Consequence: An air bag that deploys unintentionally during a crash can increase the risk of injury.
Remedy: Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed March 28, 2024, October 18, 2024, and August 2025. 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.
Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX, RLX, TLX, 2019-2022 Honda Insight, Passport, 2020 Honda CR-V Hybrid, 2018-2019 Honda Clarity PHEV, Fit, and 2015-2020 Honda Accord Hybrid, Pilot, Acura NSX vehicles. The fuel pump inside the fuel tank may fail.
Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
Remedy: Dealers will replace the fuel pump module, free of charge. Owner letters were mailed September 6, 2024. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are KGC and KGD. This recall is an expansion of NHTSA recall numbers 21V-215 and 20V-314.
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER · 23V458000
2023-06-29
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.
Consequence: Brake master cylinder separation can cause a loss of brake function and increase the risk of a crash.
Remedy: 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.
BACK OVER PREVENTION:DISPLAY FUNCTION · 23V431000
2023-06-15
Honda (American Honda Motor Co.) is recalling certain 2018-2023 Odyssey, 2019-2022 Pilot, and 2019-2023 Passport vehicles. Due to a faulty Media Oriented Systems Transport (MOST) communication coaxial cable connector, the rearview camera image may not appear on the display. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
Consequence: A rearview camera that does not display an image can reduce the driver's rear view, increasing the risk of a crash or injury.
Remedy: Dealers will replace the MOST cable harness and install a straightening cover over the vehicle cable connector, free of charge. Owner notification letters were mailed July 24, 2023. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are EEL, ZEM, and SFC.
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."
Consequence: Detached mirror glass can reduce driver visibility, increasing the risk of a crash.
Remedy: 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.
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