Toyota Highlander: Common Codes & Fixes

Real-world diagnostic data for the Toyota Highlander. These are the codes techs see most often. Tap any code for the full vehicle-specific fix and the exact part.

14 codes have specific fixes for the Toyota Highlander
B0083 Highlander B0083 is commonly caused by the driver-side pretensioner harness being pinched when the seat was moved for cleaning. 2008-2018 · moderate DIY · 1-2 hours P0030 The upstream oxygen sensor heater circuit on bank 1 fails when the internal heater element burns out or the connector corrodes. 2005-2018 · easy DIY · 30-45 min P0053 Upstream A/F sensor heater resistance out-of-range. 2006-2011 · Easy DIY · 30 min P0056 Bank 2 sensor 2 is the downstream (post-cat) O2 sensor on the driver side. 2005-2018 · easy DIY · 30-45 min P0133 Slow-responding upstream O2/A-F sensor. 2007-2017 · easy DIY · 30 min P0155 Bank 2 upstream air-fuel ratio sensor heater has failed. 2007-2017 · Moderate DIY · 45 min - 1 hour P0401 Carbon buildup in the EGR passages between the EGR valve and intake manifold. 2007-2017 · moderate DIY · 1-1.5 hours P0431 P0431 is the Bank 2 equivalent of P0421 -- warm-up catalyst efficiency is below threshold on the rear bank. 2007-2019 · hard DIY · 2-4 hours P0448 The EVAP canister close valve wiring can short to ground where it passes along the underbody. 2007-2019 · moderate DIY · 45 min - 1.5 hours P0760 Shift solenoid S3 on the Toyota U151E transmission sticks closed from degraded fluid. 2004-2016 · Advanced DIY · 3-5 hours P0761 Shift solenoid C performance on the U151E controls overdrive engagement. 2005-2017 · Advanced DIY · 4-6 hours P2096 Toyota/Lexus P2096 commonly = exhaust leak at the flex pipe or front pipe joint. 2007-2016 · moderate DIY · 2 hours P2138 Replace accelerator pedal position sensor (integrated with pedal assembly). 2002-2015 · easy DIY · 30 min P3280 Highlander and RAV4 P3280 codes commonly come from a failing canister close valve or a cracked charcoal canister. 2008-2018 · Moderate DIY · 2-3 hours

Frequently Asked Questions

What are the most common check engine light codes on a Toyota Highlander?

The most commonly reported OBD-II codes for the Toyota Highlander include B0083, P0030, P0053, P0056, P0133. Each code indicates a specific issue -- tap any code above for the full diagnostic breakdown.

How much does it cost to fix a check engine light on a Toyota Highlander?

Repair costs vary by code. Many Toyota Highlander fixes like gas cap replacement, sensor cleaning, or spark plug changes are under $50 in parts and can be done at home. More complex repairs like catalytic converter or transmission work can run $500-$2,000+ at a shop.

Can I drive my Toyota Highlander with the check engine light on?

It depends on the code. A steady check engine light usually means you can drive short distances safely. A flashing check engine light means stop driving immediately -- continued driving can cause serious engine damage. Scan the code first to know what you are dealing with.

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