Toyota OBD Codes: Meaning & Fixes

P0171 Powertrain The engine computer is adding the maximum extra fuel it's allowed on bank 1 and still sees… Moderate P0325 Powertrain The computer isn't getting a usable signal from knock sensor 1, so it pulls timing to protect… Low P0A80 Powertrain The hybrid system sees weak or unbalanced modules in the high-voltage battery and flags… Moderate P0401 Powertrain The ECU opened the EGR system but saw too little effect — the valve or its passages are likely… Low P1349 Toyota · Powertrain Toyota's VVT-i system isn't moving the intake camshaft to the position the ECM is asking for. Moderate P0011 Powertrain The bank 1 intake cam sits further advanced than the PCM asked for, usually an oil or control… Moderate

B0111 Toyota · Body The airbag computer sees a break in the firing circuit of the right front seat's side airbag. High B1801 Toyota · Body The airbag computer measured a break in the driver airbag's firing loop through the steering… High C1252 Toyota · Chassis The brake pressure pump ran far longer than normal without reaching or holding its target… High C1256 Toyota · Chassis The brake system's high-pressure accumulator is below its minimum, so power brake assist can't… Critical C1391 Toyota · Chassis The hybrid brake system is losing stored hydraulic pressure internally, so the pump keeps… High 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 P0A94 Powertrain A hybrid voltage converter isn't delivering the voltage it should – on Toyotas, the boost… High P0AA6 Powertrain High voltage is leaking toward the car body somewhere – an insulation fault that must be found… High P3000 Toyota · Powertrain Toyota's hybrid computer flags a fault in the high-voltage battery system and limits hybrid… High P3191 Toyota · Powertrain The hybrid system spun the gas engine with its motor-generator, but the engine never fired up. High