What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
2Original wording in English
CADILLAC, CHEVROLET, GMC, HUMMER
Reported code forms P0878
DTC P0878, P2714, P2723, TRANSMISSION SLIPS IN 1ST, 2ND, 3RD, OR 4TH GEARS AND/OR LONG GARAGE SHIFTS TO DRIVE, EQUIPPED WITH A 6L50 (MYB), 6L80 (MYC), OR 6L90 (MYD) TRANSMISSION. *NJ
BUICK, CADILLAC, CHEVROLET, GMC, PONTIAC, SATURN
Reported code forms P0878
6T70, 6T75, 6L50, 6L80, OR 6L90. AUTOMATIC TRANSMISSION - INFORMATION ON TRANSMISSION FLUID PRESSURE (TFP) SWITCH CHECK FOR FALSE DTC'S P0842, P0843, P0872, P0873, P0877, P0878, P0989, OR P0990. *KB
Check vehicle applicability
2A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.