Details On DTCs
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC P26FE:00 (PCM, SKYACTIV-G) DETECTION CONDITION AND POSSIBLE CAUSE
| Description |
Exhaust shutter valve range/performance problem |
| Detection condition |
Determination conditions |
- If any of the following conditions is met under condition A or condition B: Condition A:
- The feedback correction value of the exhaust shutter valve opening angle controlled by the PCM continues at the duty value of 100%.
Condition B:
- Exhaust shutter valve has a drive circuit malfunction.
|
| Preconditions |
Condition A:
- Battery voltage: above 8 V*1
Condition B:
- Battery voltage: above 8 V*1
- The input value from the exhaust shutter valve position sensor is in the closed valve side even though the PCM requests to operate the exhaust shutter valve to the open valve side.
- The following DTCs are not detected:
- Exhaust shutter valve: P2BF6:00 and P2BF7:00
*1
: Standard can be verified by displaying PIDs using M-MDS |
| Malfunction determination period |
|
| Drive cycle |
|
| Self test type |
- CMDTC self test, KOEO self test, KOER self test
|
| Sensor used |
- Exhaust shutter valve position sensor
|
| Fail-safe function |
- PCM restricts engine torque.
|
| Vehicle status when DTC are output |
- Abnormal acceleration is occurring
- Booming noise from vehicle is occurring during cylinder deactivation control
|
| Possible cause |
- Exhaust shutter valve connector or terminals malfunction
- PCM connector or terminals malfunction
- Short to ground in exhaust shutter valve control circuit
- Short circuit in exhaust shutter valve control circuits
- Short to power supply in exhaust shutter valve control circuit
- Open circuit in exhaust shutter valve control circuit
- Exhaust shutter valve malfunction (valve stuck closed)
- PCM malfunction
|
 Courtesy of MAZDA MOTORS CORP.
|