Details On DTCs
DTC P0131:00 (PCM, VINs 7, L, M, US) DETECTION CONDITION AND POSSIBLE CAUSE
| Description |
A/F sensor circuit low input |
| Detection condition |
Determination conditions |
- Any one of the following conditions is met:
- Voltage of A/F sensor terminal F is less than specified value
- Voltage of A/F sensor terminal D is less than specified value
- Voltage of A/F sensor terminal B is less than specified value
|
| Preconditions |
- Switch the ignition ON (engine off or on)
- Battery voltage: 11-18 V
- The following DTC is not detected:
- Internal PCM malfunction: P064D:00
|
| Drive cycle |
|
| Self test type |
- CMDTC self test, KOER self test
|
| Sensor used |
|
| Fail-safe function |
- Fixes duty value of A/F sensor heater
- Stops fuel feedback control of A/F sensor
|
| Vehicle status when DTCs are output |
|
| Possible cause |
- A/F sensor connector or terminals malfunction
- PCM connector or terminals malfunction
- Short to ground in any of the following A/F sensor circuits.
- A/F sensor malfunction
- PCM malfunction
|
 Courtesy of MAZDA MOTORS CORP.
|