2020 Honda Ridgeline Service and Repair Manual

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Factory-Grade Data

2020 Honda Ridgeline 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

  • RTL Crew Cab Pickup 4-Door
  • EX-L Crew Cab Pickup 4-Door
  • Black Edition Crew Cab Pickup 4-Door
  • Sport Crew Cab Pickup 4-Door
  • Touring Crew Cab Pickup 4-Door
  • RTL-E Crew Cab Pickup 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

2020 Honda Ridgeline Recalls & Complaints

NHTSA #21V93200029/11/2021Component: STRUCTURE:BODY:HOOD

Honda (American Honda Motor Co.) is recalling certain 2019 Passport, 2016-2019 Pilot, and 2017-2020 Ridgeline vehicles. The hood latch striker may become damaged and separate from the hood, which can

Consequence

A hood that opens while driving can obstruct the driver's view and increase the risk of a crash.

Remedy

Dealers will either repair the hood latch striker, or replace the hood if necessary, free of charge.

NHTSA #23V45800029/06/2023Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

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 br

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 noti

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 #20E06800017/09/2020Component: EQUIPMENT

Honda (American Honda Motor Co.) is recalling all Honda Genuine Accessory Tonneau Covers, part number 08Z07-T6Z-100F, sold for installation on 2017-2020 Ridgeline trucks. If the tonneau cover is not

Consequence

A separated panel may become a road hazard, increasing the risk of crash or injury.

Remedy

Honda will notify all registered owners of 2017-2020 Honda Ridgelines, and dealers will install teth

NHTSA #23V17400016/03/2023Component: VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR

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 prope

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 mail

NHTSA #24V06400001/02/2024Component: AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

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,

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 maile

TSB #11021752

Service Bulletin - One or more accessory running board lights are flickering or not working due to a faulty running board light assembly.

TSB #11020578

Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the customer can immediately

TSB #11011045

Service Bulletin - The AWD warning light is on potentially due to water intrusion into the rear differential pump motor connector area that corrodes the terminals.

TSB #11006251

Service Bulletin - Customer complaint of the A/C not blowing cold air due to Oil/Refrigerant leak from the A/C compressor shaft seal.

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 #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 #11002714

Service Bulletin - Customer complaint received regarding the A/C not blowing cold air due to an oil/refrigerant leak from the A/C compressor shaft seal.

TSB #11000142

Service NewsDue to On-Board Diagnostic (OBD) regulation change starting with 2019 vehicles, American Hondas Variable Valve Timing and Lift Electronic Control (VTEC) On-Board Diagnostic monitors are now included in the EGR/VVT OBD Monitor Re

Showing the 8 most recent of 76 technical service bulletins on file with NHTSA.

20250815Component: AIR BAGSCrash reported1 injured

The contact owns a 2020 Honda Ridgeline. The contact stated that while driving at approximately 35 MPH, a large sheep ran out of a yard and crashed into her vehicle with its head and horns on the driv

20250815Component: SEAT BELTSCrash reported1 injured

The contact owns a 2020 Honda Ridgeline. The contact stated that while driving at approximately 35 MPH, a large sheep ran out of a yard and crashed into her vehicle with its head and horns on the driv

20260411Component: ELECTRICAL SYSTEM

While stopped in heavy traffic at a traffic signal, the engine stopped and would not restart. This was due to the AIS system. The car became disabled in heavy traffic. I was only a few feet from the e

20260411Component: ENGINE

While stopped in heavy traffic at a traffic signal, the engine stopped and would not restart. This was due to the AIS system. The car became disabled in heavy traffic. I was only a few feet from the e

20260411Component: POWER TRAIN

While stopped in heavy traffic at a traffic signal, the engine stopped and would not restart. This was due to the AIS system. The car became disabled in heavy traffic. I was only a few feet from the e

Showing the 5 most serious of 214 complaints filed with NHTSA.

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