OBD Guide

C1214

Difference Between The Ignition Voltage And System Voltage

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Misfires
  • Unstable engine idling
  • Reduced engine power
  • Difficulty starting the engine

Causes

  • Generator malfunction
  • Low or faulty battery
  • Damage to the ignition system wiring harness
  • Battery terminal corrosion
  • Engine ECU malfunction

How to Fix

  1. Check the voltage on the battery with the engine running (should be 13.5-14.5V)
  2. Inspect the ignition system wiring harness for damage.
  3. Check the condition of the battery terminals and cleanliness of the contacts
  4. Test the generator for correct operation
  5. If necessary, replace the battery or repair the wiring

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