Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information
981 3190 Replaced by 9511428 981 3190 Replaced by 951 1428 998 8686 Replaced by 9511532 998 8686 Replaced By 9511532
Condition





The speed signal comes from a sensor on the transmission. The transmission control module (TCM) uses the signal to select the correct gear. The control module also uses the engine speed sensor (RPM) signal to determine the speed. Diagnostic trouble code (DTC) AT- 232 is stored if the transmission control module (TCM) registers that the vehicle speed signal is missing.

Substitute value
The transmission control module (TCM) "Emergency mode II"program has been initiated.

Possible source
- Open-circuit in the signal cable (+) or signal cable (- ).
- Signal cable (+) or signal cable (-) short-circuited to ground, to supply voltage or to each other.
- Defective transmission speed sensor.
- Contact resistance in the terminals.

Fault symptom[s]
- The warning lamp in the combined instrument panel flashes.
- No lock-up function.
- No adaptation of the gear slippage times at high altitude (High Altitude Compensation).
- No reduction of line pressure when gear shifting. This makes gear shifting harsher.
- No reduction of line pressure when moving the gear selector between positions P-R, N-R and N-D. This results in harsh shifting.
- No torque limiting request to engine control module (ECM) when shifting.