Diagnostic Trouble Codes


SAE J2012 Standard OBD Codes

Mazda Proprietary OBD Codes

OBD Information & Code Reading


 

Air/Fuel Control

P0100 - Mass-airflow (MAF) sensor circuit malfunction

P0105 - Manifold absolute pressure (MAP) sensor circuit malfunction

P0110 - Intake air temperature (IAT) sensor circuit malfunction - air filter box

P0115 - Engine coolant temperature (ECT) sensor circuit malfunction

P0120 - Throttle position sensor (TPS) circuit malfunction

P0125 - Low engine coolant temperature (ECT) signal inhibiting closed loop fuel control

P0130 - Oxygen sensor circuit malfunction - upstream of catalyst (front) / rear (RH) bank

P0134 - Oxygen sensor no activity detected - upstream of catalyst (front) / rear (RH) bank

P0135 - Oxygen sensor heater circuit malfunction - upstream of catalyst (front) / rear (RH) bank

P0136 - Oxygen sensor circuit malfunction - upstream of catalyst (middle) / rear (RH) bank

P0138 - Oxygen sensor circuit high input - downstream of catalyst (rear) / rear (RH) bank

P0140 - Oxygen sensor no activity detected

P0141 - Oxygen sensor heater circuit malfunction

P0146 - Oxygen sensor no activity detected - downstream of catalyst (rear)

P0147 - Oxygen sensor heater circuit malfunction - downstream of catalyst (rear)

P0150 - Oxygen sensor circuit malfunction - upstream of catalyst (front) / front (LH) bank

P0154 - Oxygen sensor no activity detected - upstream of catalyst (front) / front (LH) bank

P0155 - Oxygen sensor heater circuit malfunction - upstream of catalyst (front) / front (LH) bank

P0158 - Oxygen sensor circuit high input - downstream of catalyst (rear) / front (LH) bank

P0160 - Oxygen sensor no activity detected - downstream of catalyst (rear) / front (LH) bank

P0161 - Oxygen sensor heater circuit malfunction - downstream of catalyst (rear) / front (LH) bank

P0170 - Fuel trim malfunction - rear (RH) bank

P0173 - Fuel trim malfunction - front (LH) bank

 

Ignition System

P0300 - Random combustion misfire detected

P0301 - Combustion misfire detected - Cylinder #1

P0302 - Combustion misfire detected - Cylinder #2

P0303 - Combustion misfire detected - Cylinder #3

P0304 - Combustion misfire detected - Cylinder #4

P0305 - Combustion misfire detected - Cylinder #5

P0306 - Combustion misfire detected - Cylinder #6

P0325 - Knock sensor circuit malfunction

P0335 - Crankshaft position (CKP) sensor circuit malfunction

 

Emission Control & Auxiliary Inputs

P0400 - Exhaust gas recirculation (EGR) system malfunction

P0404 - Exhaust gas recirculation (EGR) range/performance malfunction

P0420 - Catalyst performance below threshold

P0421 - Catalyst performance below threshold - rear (RH) bank

P0430 - Catalyst performance below threshold - front (LH) bank

P0431 - Catalyst performance below threshold - front (LH) bank

P0440 - Evaporative emission control system malfunction

P0442 - Evaporative emission control system (small) leak detected

P0443 - Evaporative emission control system purge solenoid valve circuit malfunction

P0446 - Evaporative emission control system purge control valve circuit malfunction

P0450 - Fuel tank pressure sensor circuit malfunction

P0451 - Fuel tank pressure sensor malfunction

P0455 - Evaporative emissions control system leak (large leak or blockage) detected

P0464 - Fuel gauge sender unit circuit intermittent (slosh check)

P0480 - Condenser fan relay #1 control circuit malfunction

P0481 - Cooling fan relay #1 and/or condenser fan relay #2 control circuit malfunction

P0482 - Cooling and/or condenser fan relay control circuit malfunction

 

Vehicle Speed, Idle Control, & Auxiliary Inputs

P0500 - Vehicle (speedometer) speed sensor (VSS) circuit malfunction

P0505 - Idle-air control (IAC) circuit malfunction

P0510 - Closed throttle position switch circuit malfunction

P0550 - Power steering pressure switch circuit malfunction

 

Transmission Control

P0703 - Brake pedal switch circuit malfunction

P0705 - Gear range switch circuit malfunction

P0706 - Gear range switch circuit malfunction

P0710 - ATF temperature sensor circuit malfunction

P0711 - ATF temperature sensor circuit malfunction (output frozen)

P0715 - Speed input (turbine) sensor circuit malfunction

P0720 - Speed output sensor circuit malfunction

P0725 - Engine speed input circuit malfunction (ABS/TCS DTC 17)

P0730 - Incorrect gear ratio

P0731 - 1st gear - incorrect ratio

P0732 - 2nd gear - incorrect ratio

P0733 - 3rd gear - incorrect ratio

P0734 - 4th gear - incorrect ratio

P0740 - Torque converter clutch (TCC) system malfunction

P0745 - Pressure control solenoid circuit malfunction

P0750 - Shift solenoid A circuit malfunction

P0755 - Shift solenoid B circuit malfunction

P0760 - Shift solenoid C circuit malfunction

 

Air/Fuel/Ignition Control & Auxiliary Inputs

P1000 - System readiness function not yet complete

P1110 - Intake air temperature sensor circuit malfunction - dynamic chamber

P1113 - Intake air temperature sensor circuit malfunction - Lysholm compressor

P1169 - Oxygen sensor inversion not detected - upstream of catalyst (middle) / rear (RH) bank

P1170 - Oxygen sensor inversion not detected - upstream of catalyst (front) / rear (RH) bank

P1173 - Oxygen sensor inversion not detected - upstream of catalyst (front) / front (LH) bank

P1195 - Barometric pressure (EGR boost) sensor circuit malfunction

P1196 - Starter signal circuit malfunction

P1248 - Charged-air pressure sensor signal error (ABS/TCS code 84)

P1250 - Fuel pressure regulator control (PRC) solenoid valve circuit malfunction

P1345 - Camshaft position (CMP/SGC) sensor circuit malfunction

P1364 - Coil-on-plug (COP) control circuit - ignition feedback (IGF) signal error

 

Emission Control & Auxiliary Inputs

P1402 - Exhaust gas recirculation (EGR) valve position sensor circuit malfunction

P1449 - Evaporative emission canister drain/cut valve (CDCV) circuit malfunction

P1450 - Evaporative emission control system malfunction (excessive vacuum)

P1455 - Fuel gauge sender unit circuit malfunction

P1485 - Exhaust gas recirculation (EGR) vacuum solenoid valve circuit malfunction

P1486 - Exhaust gas recirculation (EGR) vent solenoid valve circuit malfunction

P1487 - Exhaust gas recirculation (EGR) boost sensor solenoid valve circuit malfunction

 

Metered Air Control

P1508 - Bypass air solenoid valve #1 circuit malfunction

P1509 - Bypass air solenoid valve #2 circuit malfunction

P1521 - Variable resonance induction system (VRIS) solenoid valve #1 circuit malfunction

P1522 - Variable resonance induction system (VRIS) solenoid valve #2 circuit malfunction

P1524 - Charged-air cooler (CAC) bypass solenoid valve circuit malfunction

P1525 - Lysholm air bypass valve (ABV) vacuum solenoid circuit malfunction

P1526 - Lysholm air bypass valve (ABV) vent solenoid circuit malfunction

P1529 - Lysholm atmospheric balance air control solenoid valve circuit malfunction

P1540 - Lysholm air bypass valve (ABV) control system malfunction

 

Auxiliary Control Modules

P1566 - Transmission control module (TCM) B+ voltage too low

P1601 - Transmission control module (TCM) - engine control unit (ECU) communication error

P1608 - Engine control unit (ECU) internal malfunction (DTCs unreadable)

P1609 - Engine control unit (ECU) internal malfunction (knock control circuit)

P1627 - Anti-lock brake system (ABS) / traction control system (TCS) module - engine control unit (ECU) communication error (ABS/TCS DTC 82)

P1628 - Anti-lock brake system (ABS) / traction control system (TCS) module - engine control unit (ECU) communication error

 

Transmission Control & Auxiliary Inputs

P1720 - Vehicle (speedometer) speed sensor (VSS) circuit malfunction

P1743 - Torque converter clutch (TCC) control solenoid valve circuit malfunction

P1744 - Torque converter clutch (TCC) control solenoid valve circuit malfunction

P1765 - 3-2 downshift timing solenoid valve circuit malfunction

P1770 - Overrunning clutch solenoid valve malfunction

P1775 - Upshift torque reduction request signal error (TPS)

P1776 - Downshift torque reduction request signal error (TPS)

P1777 - Torque reduced signal error (ECT sensor)

P1790 - Throttle position sensor (TPS) malfunction

P1792 - Throttle position sensor (TPS) malfunction

P1794 - Engine control unit (ECU) B+ voltage low

P1795 - Closed throttle position switch malfunction

P1797 - Transmission park/neutral (inhibitor) signal (PNS) error

 

ABS/TCS Control

B1318 (63) - ABS/TCS control module power supply

B1342 (61) - ABS/TCS control module

C1095 (54) - ABS motor or motor relay

C1096 (53) - ABS motor or motor relay

C1117 (17) - Engine speed input circuit failure

C1118 (82) - Torque reduction request signal line error

C1119 (83) - Torque reduction inhibit signal line error

C1140 (30) - ABS pump or left front/right rear brake line

C1145 (11) - Right front wheel-speed sensor or sensor rotor

C1148 (41) - Right front wheel-speed sensor or sensor rotor

C1155 (12) - Left front wheel-speed sensor or sensor rotor

C1158 (42) - Left front wheel-speed sensor or sensor rotor

C1165 (13) - Right rear wheel-speed sensor or sensor rotor

C1168 (43) - Right rear wheel-speed sensor or sensor rotor

C1175 (14) - Left rear wheel-speed sensor or sensor rotor

C1178 (44) - Left rear wheel-speed sensor or sensor rotor

C1186 (51) - Fail-safe relay

C1194 (24) - Left front pressure retention solenoid valve

C1198 (25) - Left front pressure retention solenoid valve

C1210 (22) - Right front pressure reduction solenoid valve

C1214 (23) - Right front pressure retention solenoid valve

C1233 (46) - Left front wheel-speed sensor or sensor rotor

C1234 (45) - Right front wheel-speed sensor or sensor rotor

C1235 (47) - Right rear wheel-speed sensor or sensor rotor

C1236 (48) - Left rear wheel-speed sensor or sensor rotor

C1242 (28) - Left rear pressure reduction solenoid valve

C1246 (26) - Right rear pressure reduction solenoid valve

C1250 (29)

C1254 (27) - Right rear pressure retention solenoid valve

C1266 (52) - Fail-safe relay

C1510 (32) - Right front solenoid valve, wheel-speed sensor, sensor rotor, or ABS pump

C1511 (33) - Left front solenoid valve, wheel-speed sensor, sensor rotor, or ABS pump

C1512 (34) - Right rear solenoid valve, wheel-speed sensor, sensor rotor, or ABS pump

C1513 (35) - Left rear solenoid valve, wheel-speed sensor, sensor rotor, or ABS pump

U2021 (87) - Engine coolant temperature at or below 0C (32F)