Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2006 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE
With Rear Ho2S Model
ENGINE CONTROL SYSTEM WITH REAR HO2S MODEL DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Condition | Monitor item |
|---|---|---|
| P0031 | HO2S heater (Front, RH) circuit low | HO2S heater |
| P0032 | HO2S heater (Front, RH) circuit high | HO2S heater |
| P0037 | HO2S heater (Rear, RH) circuit low | HO2S heater |
| P0038 | HO2S heater (Rear, RH) circuit high | HO2S heater |
| P0051 | HO2S heater (Front, LH) circuit low | HO2S heater |
| P0052 | HO2S heater (Front, LH) circuit high | HO2S heater |
| P0057 | HO2S heater (Rear, LH) circuit low | HO2S heater |
| P0058 | HO2S heater (Rear, LH) circuit high | HO2S heater |
| P0101 | MAF sensor inconsistent with TP sensor | CCM |
| P0102 | MAF circuit low input | CCM |
| P0103 | MAF circuit high input | CCM |
| P0111 | IAT circuit performance problem | CCM |
| P0112 | IAT circuit low input | CCM |
| P0113 | IAT circuit high input | CCM |
| P0117 | ECT circuit low input | Engine cooling system |
| P0118 | ECT circuit high input | Engine cooling system |
| P0121 | Throttle position stuck close | CCM |
| P0122 | TP circuit low input | CCM |
| P0123 | TP circuit high input | CCM |
| P0125 | Excessive time to enter closed loop fuel control | Engine cooling system |
| P0126 | Coolant thermostat stuck open | Thermostat |
| P0128 | Coolant thermostat stuck open | Thermostat |
| P0131 | HO2S (Front, RH) circuit low input | HO2S |
| P0132 | HO2S (Front, RH) circuit high input | HO2S |
| P0133 | HO2S (Front, RH) slow response | HO2S |
| P0134 | HO2S (Front, RH) circuit no activity detected | HO2S |
| P0137 | HO2S (Rear, RH) circuit low input | HO2S |
| P0138 | HO2S (Rear, RH) circuit high input | HO2S |
| P0139 | HO2S (Rear, RH) slow response | HO2S |
| P0140 | HO2S (Rear, RH) circuit no activity detected | HO2S |
| P0151 | HO2S (Front, LH) circuit low input | HO2S |
| P0152 | HO2S (Front, LH) circuit high input | HO2S |
| P0153 | HO2S (Front, LH) slow response | HO2S |
| P0154 | HO2S (Front, LH) circuit no activity detected | HO2S |
| P0157 | HO2S (Rear, LH) circuit low input | HO2S |
| P0158 | HO2S (Rear, LH) circuit high input | HO2S |
| P0159 | HO2S (Rear, LH) circuit malfunction | HO2S |
| P0160 | HO2S (Rear, LH) circuit no activity detected | HO2S |
| P0300 | Random misfire detected | Misfire |
| P0301 | Cylinder No.1 misfire detected | Misfire |
| P0302 | Cylinder No.2 misfire detected | Misfire |
| P0303 | Cylinder No.3 misfire detected | Misfire |
| P0304 | Cylinder No.4 misfire detected | Misfire |
| P0305 | Cylinder No.5 misfire detected | Misfire |
| P0306 | Cylinder No.6 misfire detected | Misfire |
| P0327 | Knock sensor circuit low input | CCM |
| P0328 | Knock sensor circuit high input | CCM |
| P0335 | CKP sensor circuit malfunction | CCM |
| P0340 | CMP sensor circuit malfunction | CCM |
| P0401 | EGR flow insufficient detected | EGR |
| P0403 | EGR valve motor coils open or short | CCM |
| P0421 | Warm-up catalyst system (RH) efficiency below threshold | Catalyst |
| P0431 | Warm-up catalyst system (LH) efficiency below threshold | Catalyst |
| P0441 | Evaporative emission control system incorrect purge flow | Evaporative |
| P0442 | Evaporative emission control system leak detected (small leak) | Evaporative |
| P0443 | Evaporative emission control system purge control valve circuit malfunction | CCM |
| P0446 | Change over valve (COV) (EVAP system leak detection pump) stuck close | CCM |
| P0455 | Evaporative emission control system leak detected (large leak) | Evaporative |
| P0456 | Evaporative emission control system leak detected (very small leak) | Evaporative |
| P0461 | Fuel gauge sender unit circuit range/performance | CCM |
| P0462 | Fuel gauge sender unit circuit low input | CCM |
| P0463 | Fuel gauge sender unit circuit high input | CCM |
| P0480 | Fan control module circuit malfunction | Other |
| P0500 | Vehicle speed sensor (VSS) circuit malfunction | CCM |
| P0505 | IAC valve circuit malfunction | Other |
| P0506 | Idle control system RPM lower than expected | CCM |
| P0507 | Idle control system RPM higher than expected | CCM |
| P0511 | IAC system malfunction | CCM |
| P0550 | PSP switch circuit malfunction | CCM |
| P0602 | PCM programming error | CCM |
| P0610 | PCM vehicle options error | CCM |
| P0661 | Intake manifold communication control (IMCC) actuator circuit low input | Other |
| P0662 | Intake manifold communication control (IMCC) actuator circuit high input | Other |
| P0703 | Brake switch input malfunction | CCM |
| P1602 | Immobilizer unit-PCM communication error | - |
| P1603 | Key ID numbers are not registered in PCM | - |
| P1604 | Code word is not registered in PCM | - |
| P1621 | Code word does not match after engine cranking | - |
| P1622 | Key ID number does not match | - |
| P1623 | Code word or key ID number read/write error in PCM | - |
| P1624 | Immobilizer system communication counter=0 | - |
| P2096 | Target A/F feedback system too lean (Right bank) | Fuel |
| P2097 | Target A/F feedback system too rich (Right bank) | Fuel |
| P2098 | Target A/F feedback system too lean (Left bank) | Fuel |
| P2099 | Target A/F feedback system too rich (Left bank) | Fuel |
| P2144 | EGR boost sensor solenoid valve circuit low input | Other |
| P2145 | EGR boost sensor solenoid valve circuit high input | Other |
| P2177 | Fuel system too lean at off idle (Right bank) | Fuel |
| P2178 | Fuel system too rich at off idle (Right bank) | Fuel |
| P2179 | Fuel system too lean at off idle (Left bank) | Fuel |
| P2180 | Fuel system too rich at off idle (Left bank) | Fuel |
| P2187 | Fuel system too lean at idle (Right bank) | Fuel |
| P2188 | Fuel system too rich at idle (Right bank) | Fuel |
| P2190 | Fuel system too rich at idle (Left bank) | Fuel |
| P2195 | HO2S (Front, RH) signal stuck lean | HO2S |
| P2197 | HO2S (Front, LH) signal stuck lean | HO2S |
| P2198 | HO2S (Front, LH) signal stuck rich | HO2S |
| P2227 | EGR boost sensor circuit performance problem | CCM |
| P2228 | EGR boost sensor circuit low input | CCM |
| P2229 | EGR boost sensor circuit high input | CCM |
| P2401 | Evaporative Emission System Leak Detection Pump motor circuit low input | Evaporative |
| P2402 | Evaporative Emission System Leak Detection Pump motor circuit high input | Evaporative |
| P2404 | Evaporative Emission System Leak Detection Pump air filter clogging | Evaporative |
| P2405 | Evaporative Emission System Leak Detection Pump orifice fallen off | Evaporative |
| P2407 | Evaporative Emission System Leak Detection Pump heater malfunction | Evaporative |
| P2502 | Generator terminal B circuit open | Other |
| P2503 | Generator output voltage signal no electricity | Other |
| P2504 | Battery overcharge | Other |
| P2507 | PCM +BB (back-up battery) voltage low | CCM |
| U0073 | CAN BUS OFF | Other |
| U0101 | PCM cannot receive any signals from TCM | CCM |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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