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Home >> Land Rover >> 2003 >> Range Rover >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Self-Diagnostics - With Codes >> Diagnostic Tests >> DTC P1620: Comfort Start Input, Request While Engine Running >> Bosch ME7.2 EMS DTC P1620 - Comfort Start Input, Request While Engine Running: Last Occurrence - Signal Fault >> Possible Causes

Possible Causes

  1. Driver error - crank while engine running. See step  1 under CHECK.
  2. Short circuit C0331/6 (BY) to battery voltage. See step  2 under CHECK.
  3. Connectors C0331, C0028. See step  3 under CHECK.
  4. Starter relay. See step  4 under CHECK.
  5. Ignition switch. See step  5 under CHECK.
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