P1789
Transmission Mechanical Failure - First And Reverse
DTC P1789, sometimes indicated as P178900 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the transmission (gearbox) causing transmission mechanical failure - first and reverse.
- P1789: Transmission Mechanical Failure - First And Reverse
DTC Trouble Code Search
Bulletins
Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.
- PIP5818A - EQUIPMENT:ELECTRICAL
CHEVROLET: This preliminary information communicates additional diagnostics for P1789. - PIP5818A - EQUIPMENT
CHEVROLET: This preliminary information communicates additional diagnostics for P1789. - PIP5818 - ELECTRICAL SYSTEM
CHEVROLET: This preliminary information communicates additional diagnostics for P1789.