Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2010FOCUS SE, 2D COUPE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID)DTC DIAGNOSISDTC P050B: COLD START IGNITION TIMING PERFORMANCE
2010 Ford Focus SE, 2D Coupe, Standard
DTC P050B: Cold Start Ignition Timing Performance
2010 Ford Focus SE, 2D Coupe, StandardSECTION DTC P050B: Cold Start Ignition Timing Performance
DTC 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: |
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| 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 6 minutes in park. If no DTCs are present and the malfunction indicator lamp (MIL) is not illuminated after idling 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. |
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| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the appropriate DTC. | ||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.