Toyota Tacoma: Common Codes & Fixes

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

22 codes have specific fixes for the Toyota Tacoma
B0057 Tacoma passenger buckle codes are frequently caused by coin or gravel intrusion -- the buckle faces up and catches everything. 2012-2020 · easy DIY · 30-45 min B2799 On Toyota trucks, B2799 is frequently caused by an aftermarket remote start system interfering with the immobilizer. 2006-2018 · moderate DIY · 1-3 hours C1095 Tacoma C1095 is often the ABS actuator motor after many years in corrosive road salt. 2005-2015 · hard DIY · 3-4 hours C1201 On Toyota trucks, C1201 with a check engine light is frequently triggered by the secondary air injection system (P0418/P2440/P2441). 2005-2020 · easy (diagnosis) DIY · 30 min (diagnosis) C1651 C1651 brake fluid level warning on Toyota trucks is usually the float switch in the master cylinder reservoir cap. 2005-2013 · Easy DIY · 30 min P0018 Check the crankshaft position sensor and Bank 2 cam sensor connectors for oil contamination -- leaking rear cam plug drips onto the… 2005-2015 · moderate DIY · 1-2 hours P0027 Inspect and clean the Bank 2 (passenger) VVT-i oil control valve. 2003-2010 · easy DIY · 30 min P0037 Downstream (post-cat) O2 sensor on bank 1 heater resistance drops due to exhaust moisture corroding the heater filament. 2000-2015 · Easy DIY · 30-45 min P0050 Bank 2 sensor 1 is the upstream O2 sensor on the driver side of V6 Toyota engines. 2005-2018 · moderate DIY · 45 min - 1 hour P0100 Toyota MAF/IAT combo sensor circuit fault — clean with MAF-safe cleaner first. 2000-2010 · Easy DIY · 15-30 min P0116 ECT performance fault — most often a stuck-open thermostat preventing the engine from reaching proper operating temp. 2005-2015 · Moderate DIY · 1-2 hr P0124 TPS intermittent — Toyota ETC throttle bodies are reliable but carbon buildup can cause erratic signal tracking. 2005-2016 · Easy DIY · 30-45 min P0139 Slow response post-cat on Toyota — often a sign of impending cat failure. 2005-2014 · Easy DIY · 30-45 min P0214 On the 5VZ-FE 3.4L, P0214 is the cold start injector or its timer switch. 1995-2000 · Moderate DIY · 2-3 hours P0330 Bank 2 knock sensor failure on the 1GR-FE V6. 2007-2017 · Moderate DIY · 3-4 hours P0421 The V6 Toyota trucks use a warm-up catalyst on each bank. 2005-2018 · hard DIY · 2-4 hours P0430 Toyota truck catalytic converters last a long time but fail around 150-200K. 2007-2017 · moderate DIY · 2-3 hours P0443 The EVAP purge valve solenoid circuit has high resistance from a corroded connector on the 1GR-FE engine. 2005-2015 · Easy DIY · 30-45 minutes P0449 The EVAP canister close valve (vent valve) on Toyota trucks gets clogged with dirt and debris from off-road driving. 2007-2017 · moderate DIY · 30-45 min P0455 Loose or damaged gas cap is the most common cause. 2004-2017 · easy (cap) DIY · 5 min (cap), 1 hour (canister) P0499 P0499 on Toyota trucks is the EVAP canister vent valve assembly (Toyota calls it the 'CCV'). 2005-2014 · moderate DIY · 1 hour P2196 Replace AFR sensor with Denso OEM, then check the EVAP purge valve -- if purge valve is stuck open, engine runs rich and sets P2196 again. 2005-2014 · easy DIY · 30 min

Frequently Asked Questions

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

The most commonly reported OBD-II codes for the Toyota Tacoma include B0057, B2799, C1095, C1201, C1651. 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 Tacoma?

Repair costs vary by code. Many Toyota Tacoma 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 Tacoma 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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