Trouble codes › By vehicle › Toyota Camry
Common check-engine codes on the Toyota Camry
2002-2023
One of the most common cars in America. Camrys are durable, so most check-engine codes show up at higher mileage: catalytic converters, air-fuel sensors, EVAP leaks and, on the 2.4L 2AZ-FE four-cylinder (2002-2011), oil consumption.
Most common: P0420, P0171, P2195, P0441, P0455, P0011, P0300.
P0420 Catalyst System Efficiency Below Threshold (Bank 1)
P0420 means the catalytic converter on bank 1 isn't cleaning the exhaust well enough, usually a worn converter, an exhaust leak or a lazy oxygen sensor.
On the Toyota Camry: The single most common Toyota code, especially on Camrys over about 150,000 miles. On the 2.4L 2AZ-FE, oil burning from worn piston rings can damage the converter; check oil consumption before replacing it.
P0420: causes, can I keep driving, and what to check first →
P0171 System Too Lean (Bank 1)
P0171 means bank 1 is running lean (too much air or too little fuel), most often from a vacuum leak or a dirty MAF sensor.
On the Toyota Camry: Lean, often a dirty MAF sensor or a vacuum leak (PCV hose, intake gaskets).
P0171: causes, can I keep driving, and what to check first →
P2195 O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1)
P2195 means bank 1's front oxygen sensor reads lean when it shouldn't, from a leak, a dirty MAF or an aging sensor.
On the Toyota Camry: Toyota uses air-fuel ratio sensors up front; aging sensors and exhaust leaks set P2195 and related codes.
P2195: causes, can I keep driving, and what to check first →
P0441 Evaporative Emission System Incorrect Purge Flow
P0441 means the EVAP purge system isn't flowing fuel vapor to the engine as expected, often a stuck purge valve.
On the Toyota Camry: EVAP purge flow codes and leaks (P0441, P0455, P0456) are common Toyota codes: the purge valve, gas cap and charcoal canister are the usual suspects.
P0441: causes, can I keep driving, and what to check first →
P0455 Evaporative Emission System Leak Detected (Large Leak)
P0455 means the EVAP system has a large leak, most often a loose, missing or bad gas cap.
On the Toyota Camry: Large EVAP leak: start with the gas cap, then a cracked hose or the canister.
P0455: causes, can I keep driving, and what to check first →
P0011 "A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
P0011 means bank 1's intake camshaft is more advanced than the engine computer asked for, usually from low or dirty oil or a sticking variable valve timing solenoid.
On the Toyota Camry: On the 3.5L V6 (2GR-FE), variable valve timing codes can come from oil condition; some earlier 2GR engines also had a rubber section in the oil line to the VVT-i system that Toyota replaced with an all-metal line. Check the oil and for bulletins.
P0011: causes, can I keep driving, and what to check first →
P0300 Random/Multiple Cylinder Misfire Detected
P0300 means the engine is misfiring in more than one cylinder, often from worn plugs or coils, a vacuum leak or low fuel pressure.
On the Toyota Camry: Misfires: plugs and coils at high mileage; on oil-burning 2AZ engines, fouled plugs.
P0300: causes, can I keep driving, and what to check first →
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Common codes and known problems as widely reported for these model years; your vehicle may differ. Check nhtsa.gov/recalls and ask a dealer about service bulletins for your VIN, and confirm in your service information.