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
Without Rear Ho2S Model
ENGINE CONTROL SYSTEM WITHOUT 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 |
| P0051 | HO2S heater (Front, LH) circuit low | HO2S heater |
| P0052 | HO2S heater (Front, LH) circuit high | HO2S heater |
| P0102 | MAF circuit low input | CCM |
| P0103 | MAF circuit high input | CCM |
| P0112 | IAT circuit low input | CCM |
| P0113 | IAT circuit high input | CCM |
| P0117 | ECT circuit low input | CCM |
| P0118 | ECT circuit high input | CCM |
| P0122 | TP circuit low input | CCM |
| P0123 | TP circuit high input | CCM |
| P0132 | HO2S (Front, RH) no inversion (high stuck) | CCM |
| P0134 | HO2S (Front, RH) circuit no activity detected | CCM |
| P0152 | HO2S (Front, LH) no inversion (high stuck | CCM |
| P0154 | HO2S (Front, LH) circuit no activity detected | CCM |
| 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 |
| P0351 | Ignition coil No.1 circuit malfunction | CCM |
| P0352 | Ignition coil No.2 circuit malfunction | CCM |
| P0353 | Ignition coil No.3 circuit malfunction | CCM |
| P0354 | Ignition coil No.4 circuit malfunction | CCM |
| P0355 | Ignition coil No.5 circuit malfunction | CCM |
| P0356 | Ignition coil No.6 circuit malfunction | CCM |
| P0401 | EGR flow insufficient detected | EGR |
| P0403 | EGR valve motor coils open or short | CCM |
| P0443 | Evaporative emission control system purge control valve circuit malfunction | CCM |
| P0480 | Fan control module circuit malfunction | CCM |
| P0500 | Vehicle speed sensor (VSS) circuit malfunction | CCM |
| P0505 | IAC valve circuit malfunction | CCM |
| P0511 | IAC system malfunction | CCM |
| P0602 | PCM programming error | CCM |
| P0610 | Control module 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 |
| P1602 | Immobilizer unit-PCM communication error | Other |
| P1603 | Key ID numbers are not registered in PCM | Other |
| P1604 | Code word is not registered in PCM | Other |
| P1621 | Code word does not match after engine cranking | Other |
| P1622 | Key ID number does not match | Other |
| P1623 | Code word or key ID number read/write error in PCM | Other |
| P1624 | Immobilizer system communication counter=0 | Other |
| 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 |
| P2189 | Fuel system too lean at idle (Left bank) | Fuel |
| P2190 | Fuel system too rich at idle (Left bank) | Fuel |
| P2195 | HO2S (Front, RH) signal stuck lean | HO2S |
| P2196 | HO2S (Front, RH) signal stuck rich | HO2S |
| P2197 | HO2S (Front, LH) signal stuck lean | HO2S |
| P2198 | HO2S (Front, LH) signal stuck rich | HO2S |
| P2228 | EGR boost sensor circuit low input | CCM |
| P2229 | EGR boost sensor circuit high input | CCM |
| 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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