Mazda6s 3.0L V6 CEL Codes:

DTC No. Condition MIL DC Monitor item Memory function Page

P0031 HO2S heater (RF) circuit low ON 2 O2 sensor heater (See DTC P0031 [AJ] .)
P0032 HO2S heater (RF) circuit high ON 2 O2 sensor heater (See DTC P0032 [AJ] .)
P0037 HO2S heater (RR) circuit low ON 2 O2 sensor heater (See DTC P0037 [AJ] .)
P0038 HO2S heater (RR) circuit high ON 2 O2 sensor heater (See DTC P0038 [AJ] .)

P0051 HO2S heater (LF) circuit low ON 2 O2 sensor heater (See DTC P0051 [AJ] .)
P0052 HO2S heater (LF) circuit high ON 2 O2 sensor heater (See DTC P0052 [AJ] .)
P0057 HO2S heater (LR) circuit low ON 2 O2 sensor heater (See DTC P0057 [AJ] .)
P0058 HO2S heater (LR) circuit high ON 2 O2 sensor heater (See DTC P0058 [AJ] .)

P0101 MAF sensor inconsistent with TP sensor ON 2 CCM (See DTC P0101 [AJ] .)
P0102 MAF circuit low input ON 1 CCM (See DTC P0102 [AJ] .)
P0103 MAF circuit high input ON 1 CCM (See DTC P0103 [AJ] .)
P0111 IAT circuit performance problem ON 2 CCM (See DTC P0111 [AJ] .)

P0112 IAT circuit low input ON 1 CCM (See DTC P0112 [AJ] .)
P0113 IAT circuit high input ON 1 CCM (See DTC P0113 [AJ] .)
P0117 ECT circuit low input ON 1 CCM (See DTC P0117 [AJ] .)
P0118 ECT circuit high input ON 1 CCM (See DTC P0118 [AJ] .)

P0122 TP sensor No.1 circuit low input ON 1 CCM (See DTC P0122 [AJ] .)
P0123 TP sensor No.1 circuit high input ON 1 CCM (See DTC P0123 [AJ] .)
P0125 Excessive time to enter closed loop fuel control ON 2 CCM (See DTC P0125 [AJ] .)
P0126 Coolant thermostat ON 2 Thermostat (See DTC P0126, P0128 [AJ] .)

P0128 Coolant thermostat ON 2 Thermostat (See DTC P0126, P0128 [AJ] .)
P0131 HO2S (RF) no inversion (low stuck) ON 2 CCM (See DTC P0131, P0132, P0151, P0152)
P0132 HO2S (RF) no inversion (high stuck) ON 2 CCM (See DTC P0131, P0132, P0151, P0152)
P0133 HO2S (RF) circuit malfunction ON 2 O2 sensor (See DTC P0133, P0153 [AJ] .)

P0134 HO2S (RF) circuit no activity detected ON 2 CCM (See DTC P0134, P0154 [AJ] .)
P0138 HO2S (RR) circuit high input ON 2 CCM (See DTC P0138, P0158 [AJ] .)
P0140 HO2S (RR) circuit no activity detected ON 2 CCM (See DTC P0140, P0160 [AJ] .)
P0151 HO2S (LF) no inversion (low stuck) ON 2 CCM (See DTC P0131, P0132, P0151, P0152)

P0152 HO2S (LF) no inversion (high stuck) ON 2 CCM (See DTC P0131, P0132, P0151, P0152 [AJ] .)
P0153 HO2S (LF) circuit malfunction ON 2 O2 sensor (See DTC P0133, P0153 [AJ] .)
P0154 HO2S (LF) circuit no activity detected ON 2 CCM (See DTC P0134, P0154 [AJ] .)
P0158 HO2S (LR) circuit high input ON 2 CCM (See DTC P0138, P0158 [AJ] .)

P0160 HO2S (LR) circuit no activity detected ON 2 CCM (See DTC P0140, P0160 [AJ] .)
P0171 Fuel trim system (RH) too lean ON 2 Fuel (See DTC P0171, P0174 [AJ] .)
P0172 Fuel trim system (RH) too rich ON 2 Fuel (See DTC P0172, P0175 [AJ] .)
P0174 Fuel trim system (LH) too lean ON 2 Fuel (See DTC P0171, P0174 [AJ] .)

P0175 Fuel trim system (LH) too rich ON 2 Fuel (See DTC P0172, P0175 [AJ] .)
P0222 TP sensor No.2 circuit low input ON 1 CCM (See DTC P0222 [AJ] .)
P0223 TP sensor No.2 circuit high input ON 1 CCM (See DTC P0223 [AJ] .)
P0300 Random misfire detected Flash / ON 1 or 2 Misfire (See DTC P0300 [AJ] .)
P0301 Cylinder No.1 misfire detected Flash / ON 1 or 2 Misfire  

P0302 Cylinder No.4 misfire detected Flash / ON 1 or 2 Misfire
P0303 Cylinder No.2 misfire detected Flash / ON 1 or 2 Misfire
P0304 Cylinder No.5 misfire detected Flash / ON 1 or 2 Misfire
P0305 Cylinder No.3 misfire detected Flash / ON 1 or 2 Misfire
P0306 Cylinder No.6 misfire detected Flash / ON 1 or 2 Misfire

P0325 KS circuit ON 1 CCM (See DTC P0325 [AJ] .)
P0335 CKP sensor circuit malfunction ON 1 CCM (See DTC P0335 [AJ] .)
P0340 CMP sensor (RH) circuit malfunction ON 1 CCM (See DTC P0340 [AJ] .)
P0345 CMP sensor (LH) circuit malfunction ON 1 CCM (See DTC P0345 [AJ] .)

P0401 EGR flow insufficient detected ON 2 EGR (See DTC P0401 [AJ] .)
P0402 EGR flow excessive detected ON 2 EGR (See DTC P0402 [AJ] .)
P0403 EGR valve (stepper motor) circuit malfunction ON 2 CCM (See DTC P0403 [AJ] .)
P0421 Warm-up catalyst system (RH) efficiency below threshold ON 2 Catalyst (DTC P0421, P0431)

P0431 Warm-up catalyst system (LH) efficiency below threshold ON 2 Catalyst (DTC P0421, P0431)
P0441 EVAP control system incorrect purge flow ON 2 Evaporative (See DTC P0441 [AJ] .)
P0442 EVAP control system leak detected (small leak) ON 2 Evaporative (See DTC P0442 [AJ] .)
P0443 EVAP control system purge control valve circuit malfunction ON 2 CCM (See DTC P0443 [AJ] .)

P0446 Change over valve (EVAP leak detection pump) stuck close ON 2 Evaporative (DTC P0446)
P0455 EVAP control system leak detected (large leak) ON 2 Evaporative (See DTC P0455 [AJ] .)
P0456 EVAP control system leak detected (very small leak) ON 2 Evaporative (See DTC P0456 [AJ] .)
P0461 Fuel gauge sender unit circuit range/performance ON 2 CCM (See DTC P0461 [AJ] .)

P0462 Fuel gauge sender unit circuit low input ON 2 CCM (See DTC P0462 [AJ] .)
P0463 Fuel gauge sender unit circuit high input ON 2 CCM (See DTC P0463 [AJ] .)
P0480 Fan control circuit malfunction OFF 2 Other (See DTC P0480 [AJ] .)
P0500 VSS circuit malfunction ON 2 CCM (See DTC P0500 [AJ] .)

P0505 Idle control system malfunction OFF - - - (See DTC P0505 [AJ] .)
P0506 Idle control system RPM lower than expected ON 2 CCM (See DTC P0506 [AJ] .)
P0507 Idle control system RPM higher than expected ON 2 CCM (See DTC P0507 [AJ] .)
P0550 PSP switch circuit malfunction ON 2 CCM (See DTC P0550 [AJ] .)

P0564 Cruise control switch circuit malfunction OFF 1 Other (See DTC P0564 [AJ] .)
P0571 Brake switch circuit malfunction OFF 1 Other (See DTC P0571 [AJ] .)
P0602 PCM programming error ON 1 CCM (See DTC P0602 [AJ] .)
P0606 ECM/PCM processor OFF 1 Other (See DTC P0606 [AJ] .)

P0610 Control module vehicle options error ON 1 CCM (See DTC P0610 [AJ] .)
P0703 Brake switch No.1 input malfunction ON 2 CCM (See DTC P0703 [AJ] .)
P0704 Clutch switch input malfunction ON 2 CCM (See DTC P0704 [AJ] .)
P0850 Neutral switch input malfunction ON 2 CCM (See DTC P0850 [AJ] .)

P1309 PCM IC for misfire detection ON 2 CCM (See DTC P1309 [AJ] .)
P1410 VAD control system circuit malfunction OFF 2 Other (See DTC P1410 [AJ] .)
P1487 EGR boost sensor solenoid valve circuit malfunction ON 2 CCM (See DTC P1487 [AJ] .)
P1562 PCM +BB voltage low ON 1 CCM (See DTC P1562 [AJ] .)

P2088 CMP actuator (RH) circuit low ON 1 CCM (See DTC P2088 [AJ] .)
P2089 CMP actuator (RH) circuit high ON 1 CCM (See DTC P2089 [AJ] .)
P2092 CMP actuator (LH) circuit low ON 1 CCM (See DTC P2092 [AJ] .)
P2093 CMP actuator (LH) circuit high ON 1 CCM (See DTC P2093 [AJ] .)

P2100 Throttle actuator control motor circuit/open ON 1 CCM (See DTC P2100 [AJ] .)
P2101 Throttle actuator control motor circuit range/performance ON 1 CCM (DTC P2101 [AJ] .)
P2105 Throttle actuator control system - forced engine shutdown OFF 1 Other (DTC P2105 [AJ] .)
P2107 Throttle actuator control module processor ON 1 CCM (See DTC P2107 [AJ] .)

P2110 Throttle actuator control system - forced limited RPM ON 1 CCM (See DTC P2110 [AJ] .)
P2111 Throttle actuator control system - stuck open ON 1 CCM (See DTC P2111, P2112 [AJ] .)
P2112 Throttle actuator control system - stuck close ON 1 CCM (See DTC P2111, P2112 [AJ] .)
P2119 Throttle actuator control throttle body range/performance ON 2 CCM (DTC P2119 [AJ] .)

P2122 APP sensor No.1 circuit low input ON 1 CCM (See DTC P2122 [AJ] .)
P2123 APP sensor No.1 circuit high input ON 1 CCM (See DTC P2123 [AJ] .)
P2127 APP sensor No.2 circuit low input ON 1 CCM (See DTC P2127 [AJ] .)
P2128 APP sensor No.2 circuit high input ON 1 CCM (See DTC P2128 [AJ] .)

P2135 TP sensor No.1/No.2 voltage correlation ON 1 CCM (See DTC P2135 [AJ] .)
P2138 APP sensor No.1/No.2 voltage correlation ON 1 CCM (See DTC P2138 [AJ] .)
P2227 EGR boost sensor circuit performance problem ON 2 CCM (See DTC P2227 [AJ] .)
P2228 EGR boost sensor circuit low input ON 1 CCM (See DTC P2228 [AJ] .)

P2229 EGR boost sensor circuit high input ON 1 CCM (See DTC P2229 [AJ] .)
P2401 EVAP system leak detection pump control circuit low ON 2 Evaporative (DTC P2401)
P2402 EVAP system leak detection pump control circuit high ON 2 Evaporative (DTC P2402)
P2404 EVAP system leak detection pump sense circuit malfunction ON 2 Evaporative (DTC P2404)

P2405 EVAP system leak detection pump sense circuit low input ON 2 Evaporative (DTC P2405)
P2406 EVAP system leak detection pump sense circuit high input ON 2 Evaporative (DTC P2406)
P2407 EVAP system leak detection pump sense circuit intermittent ON 2 Evaporative (DTC P2407)
P2502 Generator terminal B circuit open OFF 1 Other (See DTC P2502 [AJ] .)

P2503 Generator output voltage signal no electricity OFF 1 Other (See DTC P2503 [AJ] .)
P2504 Battery overcharge OFF 1 Other (See DTC P2504 [AJ] .)
U0073 CAN system communication error (See MULTIPLEX COMMUNICATION SYSTEM .)
U0121 Communication error to ABS/TCS HU/CM (See MULTIPLEX COMMUNICATION SYSTEM .)

P0011 CMP timing over-advanced (RH) ON 1 CCM (See DTC P0011 [AJ] .)
P0012 CMP timing over-retarded (RH) ON 1 CCM (See DTC P0012 [AJ] .)
P0021 CMP timing over-advanced (LH) ON 1 CCM (See DTC P0021 [AJ] .)
P0022 CMP timing over-retarded (LH) ON 1 CCM (See DTC P0022 [AJ] .)