OBD Guide

P2312

Ignition Coil E Primary Control Circuit Low

P2312 is an OBD-II diagnostic trouble code meaning: Ignition Coil E Primary Control Circuit Low. Common causes: faulty ignition coil, open or short circuit in wiring. Estimated repair cost: $17–67.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–67 (est.)

Symptoms

  • Misfire in one cylinder
  • The engine runs rough
  • Reduced engine power
  • Increased fuel consumption
  • Check Engine Light Is On

Causes

  • Faulty ignition coil
  • Open or short circuit in wiring
  • Poor contact in coil connector
  • Coil driver failure in ECU
  • Grounding problems

How to Fix

  1. Check the condition of the ignition coil
  2. Inspect wiring and connectors for damage
  3. Check the resistance of the ignition coil
  4. Check the voltage on the coil
  5. If necessary, replace the ignition coil

Related codes

Error P2312 by Vehicle Brand

FAQ

What does the P2312 code mean?

P2312 is an OBD-II diagnostic trouble code that indicates: Ignition Coil E Primary Control Circuit Low

What causes a P2312 error code?

The most common causes of P2312 include: Faulty ignition coil; Open or short circuit in wiring; Poor contact in coil connector; Coil driver failure in ECU.

How do I fix a P2312 diagnostic trouble code?

To fix P2312: Check the condition of the ignition coil. Inspect wiring and connectors for damage. Check the resistance of the ignition coil. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2312?

Limited driving only, diagnose soon

How much does it cost to fix P2312?

The estimated repair cost for P2312 is $17–67. Actual cost depends on your vehicle, location, and labor rates.

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