Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information TCM-P073600

Condition




The transmission control module (TCM) receives signal about input and output rpm from the transmission's two rpm sensors. For each gear there is a determined ratio and, using the signals, the control module calculates the transmission's gear ratio. If the transmission control module (TCM) registers that the transmission is mechanically in neutral position but the gear selector has been moved to "D" or "R", diagnostic trouble code TCM-P073000 or TCM-P073600 is generated, depending on the cause of the malfunction.

TCM-P073000
The diagnostic trouble code can be diagnosed when driving forward (gear position "D"), engine rpm above 600 rpm, throttle damper angle open more than 10%, transmission's oil temperature above +0 °C and brake pedal unaffected.

TCM-P073600
The diagnostic trouble code can be diagnosed when reversing (gear position "R"), engine rpm above 600 rpm, throttle damper angle open more than 10%, transmission's oil temperature above +0 °C and brake pedal unaffected.

Substitute value
- Auxiliary program Emergency mode 1 in the transmission control module (TCM) has started.

Hint: Emergency mode in case of malfunction Emergency Mode in Case of Malfunction

Possible source
- Internal malfunction in the transmission's control system.
- Mechanical fault in gearbox. Gearbox components worn and causing slip or system pressure too low.

Fault symptom[s]
- General warning lamp lit
- Malfunction indicator lamp (MIL) lit.
- Abnormally slipping gears.
- Harsh gear changing
- No gear changing.