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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 25 (1.4L 16-Valve - DTCS P0354-00 To P1021-00 - 500) >> DTC Troubleshooting >> P050B-00-Cold Start Ignition Timing Performance >> Theory Of Operation

Theory Of Operation

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Spark adjustment during a cold start is intended to provide quick response to idle speed variations. The spark adjust diagnostics monitors spark advance on a cold start over a period of time, then compares the average spark advance to a threshold.