OBD Guide

C1616

Cranking Signal System

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Problems starting the engine
  • Unstable engine operation after starting
  • Check Engine Light Illuminates

Causes

  • Open or short circuit in the start signal circuit
  • Malfunction of the crankshaft position sensor (CPS)
  • Problems with the ECU
  • Damaged wiring harness

How to Fix

  1. Check the integrity of the start signal circuit (opens, shorts)
  2. Diagnose the crankshaft position sensor (CPS)
  3. Check connections and connectors in the circuit
  4. Test the ECU for errors

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