Code P039, TCC Engagement Problem: Notes

This code test monitors engine RPM and vehicle speed and compares them. PCM will set code when engine speed exceeds fault value for a particular vehicle speed. This code can set due to an electrical problem or slippage of TCC or transaxle clutches. If a TCC failure has occurred, failure is more likely to be observed under high road load (high MAP) conditions. Use code snapshot data to confirm failure.