P0731 6F

P0731 6F

Gear 1, Faulty Gear Ratio.







Fault symptom
- Messages shown in SID.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Engine running and not in limp home mode.

Exceptions:
- Output speed < 500 rpm.
- Output speed > 1260 rpm.
- Acceleration pedal position < 50 %.
- Engine speed does not increase for a duration of 1 second.
- Driver not driving in 1st gear.

Normal exceptions for shifting error DTC:
- Selector lever not in position D.
- During shifting.
- Oil temperature <= 20 degree C
- Engine speed <400 rpm.
- Battery voltage < 10.5 Volt.
- Selector lever in R position.

Malfunction in one of the following systems:
- Input speed.
- Output speed.
- Gear selector position sensor
- Gearbox Fluid Temperature Sensor
- Engine speed.
- ABS vehicle speed.
- Accelerator pedal position.

Fault criteria:
- Gear ratio measured by the control module varies more than 3% from the expected value.

System reaction to a fault:
- Limp home

Diagnostic help

Diagnosis regards:
- Locating a mechanical fault.