Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CEM-U000188

Condition
The control modules transmit and receive information via a standardized serial communication method - CAN (Control Area Network).
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Incorrect message sent/received on the HS-CAN network.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Starting the control module's CAN communication.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

Substitute value
- Control module shuts itself off ("bus-off").

Hint: Control module will remain shut off until the power supply is broken (15, 30, X). When the power supply is connected the control module will make a new attempt to communicate.

Possible source
- Open-circuit in one or both CAN cables in part of the network.

Fault symptom[s]
- Driving/Poor performance/lacks power/At take off
- Starting/Engine does not start/Engine turns
- Driving/Poor performance/lacks power
- Driving/Hesitates/surges/Unsure when/at all times
- Driving/Hesitates/surges/During acceleration
- Driving/Hesitates/surges/During deceleration
- Driving/Hesitates/surges/At steady speed
- Cruise control/Does not engage
- Starting/Engine does not start/Unsure when/at all times
- Gauges/Speedometer not accurate/does not work
- Gauges/Tachometer not accurate/does not work
- Gauges/Engine coolant temperature gauge not accurate/Value too high
- Gauges/Engine coolant temperature gauge not accurate/Value too low