P1624

CHECK ENGINE REQUEST





Fault Symptoms
CHECK ENGINE lamp (MIL) ON.
CHECK GEARBOX lamp ON.
Transmission in limp-home mode.

Conditions.
The transmission control module (TCM) has recorded an emission-related fault.

Diagnostic Help.
Diagnostic trouble code P1624 is generated when the transmission control module (TCM) detects an emission-related fault. The TCM sends a CHECK
ENGINE request to the Motronic control module which then switches on the CHECK ENGINE lamp (MIL). Continue fault diagnosis in the Automatic Transmission.

Check The Wiring.
Intermittent faults may occur as a result of temporary short circuits and breaks in the wiring. Jiggle the wiring at several points and in different directions to ascertain whether the wiring harness, including any connectors, is causing the trouble. Observe the multimeter, ISAT scan tool or test lamp while doing this.





Diagnostic Procedure.
Continue fault diagnosis in the Automatic Transmission.