Cold Start Variable Cam Timing (VCT) Monitor
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2010 Mercury Milan, 2010 Mercury Mariner, 2010 Mercury Grand Marquis, 2010 Lincoln Town Car, and 2010 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.
If the VCT cam phasing is used during a cold start to improve catalyst heating, the VCT system checks the functionally by monitoring the closed loop cam position error correction. If the proper cam position cannot be maintained and the system has an advance or retard error greater than the malfunction threshold, a cold start emission reduction VCT control malfunction is indicated.
- DTC: P052A Cold start camshaft position timing over-advanced (Bank 1)
- DTC: P052B Cold start camshaft timing over-retarded (Bank 1)
- DTC: P052C Cold start camshaft timing over-advanced (Bank 2)
- DTC: P052D Cold start camshaft timing over-retarded (Bank 2)
- Monitor execution: Continuous
- Monitor sequence: None
- Monitoring duration: 5 seconds