OBD Guide

P2AF4

Starter Relay C Control Circuit High

P2AF4 is an OBD-II diagnostic trouble code meaning: Starter Relay C Control Circuit High. Common causes: short circuit to positive in the control circuit, faulty starter relay. Estimated repair cost: $6–28.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$6–28 (est.)

Symptoms

  • Problems starting the engine
  • Engine won't start
  • Relay clicks when trying to start
  • Check Engine Light Is On
  • The starter does not work

Causes

  • Short circuit to positive in the control circuit
  • Faulty starter relay
  • Wiring harness damage
  • ECM problems
  • Corrosion of relay contacts

How to Fix

  1. Check relay control circuit for short circuit
  2. Test the starter relay
  3. Inspect the wiring harness for damage
  4. Check relay contacts and connectors
  5. If necessary, replace the starter relay

Related codes

Error P2AF4 by Vehicle Brand

FAQ

What does the P2AF4 code mean?

P2AF4 is an OBD-II diagnostic trouble code that indicates: Starter Relay C Control Circuit High

What causes a P2AF4 error code?

The most common causes of P2AF4 include: Short circuit to positive in the control circuit; Faulty starter relay; Wiring harness damage; ECM problems.

How do I fix a P2AF4 diagnostic trouble code?

To fix P2AF4: Check relay control circuit for short circuit. Test the starter relay. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2AF4?

Yes, but get it checked soon

How much does it cost to fix P2AF4?

The estimated repair cost for P2AF4 is $6–28. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat