Toyota OBD Codes: Meaning & Fixes

P0011 Powertrain The bank 1 intake cam sits further advanced than the PCM asked for, usually an oil or control… Moderate P0171 Powertrain The engine computer is adding the maximum extra fuel it's allowed on bank 1 and still sees… Moderate P0A0F Powertrain The hybrid system spun the gas engine with its motor-generator to start it, but the engine… High P0A93 Powertrain The inverter's separate coolant loop isn't carrying heat away – usually a dead electric… High P0440 Powertrain Catch-all EVAP code: the system failed its self-check. Start with the gas cap, then check hoses… Minor P0A94 Powertrain A hybrid voltage converter isn't delivering the voltage it should – on Toyotas, the boost… High

B0111 Toyota · Body The airbag computer sees a break in the firing circuit of the right front seat's side airbag. High B1650 Toyota · Body The airbag computer got an error from the passenger seat weight sensors and can't classify… Moderate B1801 Toyota · Body The airbag computer measured a break in the driver airbag's firing loop through the steering… High C1201 Toyota · Chassis The engine computer reported a fault, so the ABS/VSC unit switched stability and traction… Low C1223 Toyota · Chassis The stability control side of the system has been told that ABS has a fault, so VSC and TRAC… Moderate C1241 Toyota · Chassis The ABS/stability control computer saw its supply voltage drop too low, so it shut the systems… Low C1252 Toyota · Chassis The brake pressure pump ran far longer than normal without reaching or holding its target… High C1253 Toyota · Chassis The brake ECU sees a pump motor relay or its monitor line not doing what it was told to do. Moderate C1256 Toyota · Chassis The brake system's high-pressure accumulator is below its minimum, so power brake assist can't… Critical C1300 Toyota · Chassis The ABS/VSC computer failed its own internal self-test and has shut down ABS and stability… Moderate C1391 Toyota · Chassis The hybrid brake system is losing stored hydraulic pressure internally, so the pump keeps… High P0000 Powertrain P0000 is not a fault: the scanner found no stored code. It is a placeholder that means… Minor P0011 Powertrain The bank 1 intake cam sits further advanced than the PCM asked for, usually an oil or control… Moderate P0031 Powertrain The upstream sensor heater on bank 1 draws little or no current – usually an open heater… Low P0100 Powertrain The PCM sees an electrical fault in the MAF sensor circuit: signal missing, erratic or not… Low P0130 Powertrain The upstream oxygen sensor on bank 1 sent a signal the engine computer could not make sense of. Low P0138 Powertrain The oxygen sensor behind the converter on bank 1 reads too high, often from an internal short… Low P0155 Powertrain The heater in bank 2's front O2 sensor, or its fuse, power feed or ECU-controlled ground, has… Low P0171 Powertrain The engine computer is adding the maximum extra fuel it's allowed on bank 1 and still sees… Moderate P0305 Powertrain Cylinder 5 is misfiring. First job: work out which bank it sits on, because that decides what… Moderate P0325 Powertrain The computer isn't getting a usable signal from knock sensor 1, so it pulls timing to protect… Low P0332 Powertrain Knock sensor 2 reads too low. On a V engine it's the bank without cylinder 1; on some fours… Low P0401 Powertrain The ECU opened the EGR system but saw too little effect — the valve or its passages are likely… Low P0410 Powertrain The cold-start air pump system that helps heat the catalytic converter didn't pass its… Low P0418 Powertrain The ECU sees a fault in the relay circuit that switches the secondary air pump on and off. Low P0440 Powertrain Catch-all EVAP code: the system failed its self-check. Start with the gas cap, then check hoses… Minor P0441 Powertrain The ECU opened the purge valve but saw the wrong flow: too little, too much, or at the wrong… Low P0451 Powertrain The tank pressure reading is electrically fine but doesn't make sense: offset, stuck, noisy… Minor P0607 Powertrain A general internal performance check in the engine computer failed – supply, grounds… Moderate P0A0F Powertrain The hybrid system spun the gas engine with its motor-generator to start it, but the engine… High