Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information DEM-P163568

Condition

Note! This diagnostic trouble code (DTC) status is an event controlled diagnostic trouble code (DTC). An event controlled diagnostic trouble code (DTC) does not mean that there is a fault in the control module when it is active, but is designed as information.

Differential electronic module (DEM) checks engagement and disengagement of four-wheel drive. The control module controls engagement and disengagement using a number of parameters, among others, by comparing speed of the wheels. If a tyre of an incorrect size (e.g. the spare wheel) has been fitted, this may result in incorrect enabling of four-wheel drive. Even a puncture in one or more tyres can result in incorrect enabling of four-wheel drive.
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Any of the wheels on the front or rear axle rotate faster than other wheels when driving on straight road with constant throttle application.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Constant vehicle speed (above 20 km/h).
- Constant engine rpm.
- Only small steering adjustments.
- Brake pedal released (no braking).
- The parking brake is not applied.
- Engine brake not active (accelerator pedal pressed down).

Substitute value
- Reduced function of four-wheel drive.

Possible source
- Puncture in one or more tyres.
- Tire with incorrect dimension has been installed on front or rear axle (compare with other tires on the vehicle).

Fault symptom[s]
- MU, 4-wheel/all wheel drive/Does not work