2018 Honda Odyssey Service and Repair Manual

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Factory-Grade Data

2018 Honda Odyssey service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical diagnostics with wiring diagrams
  • Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more

Trims covered

  • LX Mini Passenger Van 4-Door
  • EX-L Mini Passenger Van 4-Door
  • Elite Mini Passenger Van 4-Door
  • Touring Mini Passenger Van 4-Door
  • EX Mini Passenger Van 4-Door

Engines covered

  • 3.5L 3471CC V6 GAS SOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

2018 Honda Odyssey Recalls & Complaints

NHTSA #20V43900028/07/2020Component: BACK OVER PREVENTION: SENSING SYSTEM: CAMERA

Honda (American Honda Motor Co.) is recalling certain 2018-2020 Odyssey, 2019-2020 Passport, and 2019-2021 Pilot vehicles. Incorrect instrument panel control module software can cause the instrument

Consequence

Operating a vehicle without a functioning instrument panel or rearview camera display increases the

Remedy

Honda will notify owners, and dealers will reprogram the instrument panel control module software, f

NHTSA #20V43700028/07/2020Component: LATCHES/LOCKS/LINKAGES:DOORS:LATCH

Honda (America Honda Motor Co.) is recalling certain 2018-2020 Odyssey vehicles. Water may enter the outer door handle cables for the sliding doors. If this occurs, the outer door handle cables may

Consequence

A power sliding door that fails to latch may open while moving, increasing the risk of injury.

Remedy

Honda will notify owners, and dealers will replace the power sliding door outer handle cables, free

NHTSA #17V39700023/06/2017Component: SEAT BELTS

Honda (American Honda Motor Co.) is recalling certain 2018 Honda Odyssey vehicles. The seat belt tongue for the third row center seating position may not be compatible with the latch, preventing the

Consequence

If in the event of a crash, the seat belt cannot restrain the occupant they have an increased risk o

Remedy

Honda will notify owners, and dealers will inspect the third row center seat belt to make sure that

NHTSA #19V21300020/03/2019Component: SERVICE BRAKES, AIR:ANTILOCK:WHEEL SPEED SENSOR

Braun Corporation (Braun) is recalling certain 2018-2019 Honda Odyessy vehicles modified to be equipped with an in-floor wheelchair ramp conversion. The rear wheel speed sensor harnesses may have bee

Consequence

If the rear wheel speeds cannot be correctly monitored, the anti-lock brake system may not engage pr

Remedy

Braun has notified owners, and dealers will inspect and correct the rear wheel speed sensor harnesse

NHTSA #23V85800018/12/2023Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

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,

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, 2

NHTSA #23V43100015/06/2023Component: BACK OVER PREVENTION:DISPLAY FUNCTION

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 coaxia

Consequence

A rearview camera that does not display an image can reduce the driver's rear view, increasing the r

Remedy

Dealers will replace the MOST cable harness and install a straightening cover over the vehicle cable

NHTSA #21V01000014/01/2021Component: FUEL SYSTEM, GASOLINE:STORAGE

Braun Corporation (Braun) is recalling certain 2018-2021 Braun-modified Honda Odyssey vehicles. The fuel tank assembly installed by Braun may be susceptible to the fuel tank overfilling into the char

Consequence

A fuel leak in the presence of an ignition source may increase the risk of fire.

Remedy

Braun will notify owners, and dealers will inspect vehicles. If evidence of a fuel leak is present,

NHTSA #23V75100013/11/2023Component: ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL

Honda (American Honda Motor Co.) is recalling certain 2015-2020 Acura TLX, 2016-2020 Acura MDX, 2016 and 2018-2019 Pilot, 2017 and 2019 Ridgeline, and 2018-2019 Odyssey vehicles. Due to a manufacturi

Consequence

A damaged engine may run improperly or stall while driving, increasing the risk of a fire, crash, or

Remedy

Dealers will inspect and repair, or replace the engine as necessary, free of charge. Owner letters

NHTSA #19V29900012/04/2019Component: POWER TRAIN:AUTOMATIC TRANSMISSION

Honda (American Honda Motor Co.) is recalling certain 2018-2019 Odyssey vehicles. Loose battery terminal connections or a degraded battery may cause the Transmission Control Unit (TCU) to unexpectedl

Consequence

A damaged parking rod can allow the vehicle to roll when parked, increasing the risk of a crash or i

Remedy

Honda will notify owners, and dealers will ensure the battery terminal connections are secure and wi

NHTSA #26V22700009/04/2026Component: AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE:SOFTWARE

Honda (American Honda Motor Co.) is recalling certain 2018-2022 Odyssey vehicles. A software programming error can cause the side and side curtain air bags to deploy unexpectedly.

Consequence

Air bags that deploy unexpectedly can increase the risk of injury.

Remedy

Dealers will reprogram the supplemental restraint system (SRS) electronic control unit (ECU) softwar

NHTSA #23V15800009/03/2023Component: SEAT BELTS:FRONT:BUCKLE ASSEMBLY

Honda (American Honda Motor Co.) is recalling certain 2017-2020 CR-V, 2018-2019 Accord and Accord Hybrid, 2018-2020 Odyssey, 2019 Insight, and 2019-2020 Acura RDX vehicles. A manufacturing issue with

Consequence

An unlatched seat belt cannot properly restrain the seat occupant during a crash, increasing their r

Remedy

Dealers will replace the driver and front passenger seat belt buckle release buttons or the buckle a

NHTSA #20V06600006/02/2020Component: ELECTRICAL SYSTEM:WIRING

Honda (American Honda Motor Co.) is recalling certain 2018-2020 Odyssey vehicles. The wire harness for the third row seat accessory power outlet may get pinched between the unibody and rear trim pane

Consequence

An intermittent electrical short could overheat the wire harness, increasing the risk of a fire.

Remedy

Honda will notify owners, and dealers will inspect the third row seat accessory power outlet wire ha

TSB #11015008

Owner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engaging, your vehicle may not automatically restart.

TSB #11006249

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2020 Accords, 2016-2020 Civics, 2017-2020 CR-Vs, & 2018-2020 Odysseys that have been diagnosed to be in need of the low-pressure fuel pump, fuel strainer, f

TSB #11005272

Service Bulletin - MIL flashes and vehicle will not accelerate, low power. After cycling the ignition, the symptom does not return with no stored DTCs. This issue is more common in regions with cold weather (specifically near or below freez

TSB #11005271

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2020 Accords, 2016-2020 Civics, 2017-2020 CR-Vs, & 2018-2020 Odysseys that have been diagnosed to be in need of the low-pressure fuel pump, fuel strainer, f

TSB #11004264

Dealer Message - Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2020 Accords, 2016-2020 Civics, 2017-2020 CR-Vs, & 2018-2020 Odysseys that have been diagnosed to be in need of the low-pressure fuel pump,

TSB #11002716

Service Bulletin - The MIL flashes and vehicle will not accelerate, low power. After cycling the ignition, the symptom does not return with no stored DTCs. This issue is more common in regions with cold weather (specifically near or below f

TSB #11001420

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2020 Accords, 2016-2020 Civics, 2017-2020 CR-Vs, & 2018-2020 Odysseys that have been diagnosed to be in need of the low-pressure fuel pump, fuel strainer, f

TSB #11000134

Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2020 Accords, 2016-2020 Civics, 2017-2020 CR-Vs, & 2018-2020 Odysseys that have been diagnosed to be in need of the low-pressure fuel pump, fuel strainer, f

Showing the 8 most recent of 278 technical service bulletins on file with NHTSA.

20250920Component: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKINGCrash reported3 injured3 fatalities

I was involved in an accident with with my family. Pregnant wife and daughter. I got into a front end collision and I was at fault. The forward collision warning didn’t activate, Neither did the aut

20250920Component: FORWARD COLLISION AVOIDANCE: WARNINGSCrash reported3 injured3 fatalities

I was involved in an accident with with my family. Pregnant wife and daughter. I got into a front end collision and I was at fault. The forward collision warning didn’t activate, Neither did the aut

20250920Component: SERVICE BRAKESCrash reported3 injured3 fatalities

I was involved in an accident with with my family. Pregnant wife and daughter. I got into a front end collision and I was at fault. The forward collision warning didn’t activate, Neither did the aut

20250902Component: FUEL/PROPULSION SYSTEMCrash reported1 injured

I bought my van used in March of 2025. within 6 weeks I noticed when accelerating my van hesitated about 3 seconds before going when I went to take-off. This has caused great concern . Last week it

20250902Component: UNKNOWN OR OTHERCrash reported1 injured

I bought my van used in March of 2025. within 6 weeks I noticed when accelerating my van hesitated about 3 seconds before going when I went to take-off. This has caused great concern . Last week it

Showing the 5 most serious of 1536 complaints filed with NHTSA.

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