Code P039, TCC Engagement Problem (5 Of 5): Notes
WARNING: This page is about a different car, the 1995 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Test numbers refer to numbers on diagnostic chart.
- This stall test checks for TCC apply.
- Checks for TCC modulation operation.
- Code setting with normal TCC operation may indicate possible transaxle clutch slippage, usually during high road load (high MAP) conditions. Use code snapshot data to confirm condition. Check transaxle for signs of 4th clutch slippage.