P050B - Cold Start Ignition Timing Performance

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

P050B - COLD START IGNITION TIMING PERFORMANCE

Description:	The monitor compares commanded spark timing to the spark timing desired by the powertrain control module (PCM). When the difference between desired and commanded spark timing exceeds the calibrated threshold, the DTC sets.
Possible Causes:	Intake air restriction Exhaust restriction Engine mechanical concern Damaged or sludged electronic throttle body (ETB) Vacuum leaks Damaged PCM
Diagnostic Aids:	Disregard the freeze frame data. Freeze frame data does not apply to the cold start monitor. This DTC is informational only and may be accompanied by other DTCs. Diagnose other DTCs first. If no other DTCs are present, inspect the intake air system for air restrictions, vacuum leaks, and damage. If no concerns are present, clear the DTCs and verify the engine coolant temperature (ECT) is below 37.8° C (100°F). Allow the vehicle to soak for 2-3 hours if necessary for the ECT to fall below 37.8° C (100°F). Start the engine without touching the accelerator pedal and allow the engine to idle for 15 seconds in park, then drive with the engine on for 6 minutes. If no DTCs are present and the malfunction indicator lamp (MIL) is not illuminated after idling with the engine on for 15 seconds in park and driving with the engine on for 6 minutes, carry out the key ON engine running (KOER) self-test to confirm that no DTCs are present and the repair is complete.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	Refer to the P050E - COLD START ENGINE EXHAUST TEMPERATURE OUT OF RANGE Description, Possible Causes and Diagnostic Aids for the DTC.