OBD Guide

P16F5

Starter Cut Relay 1 Control Circuit High Voltage

P16F5 is an OBD-II diagnostic trouble code meaning: Starter Cut Relay 1 Control Circuit High Voltage. Common causes: short circuit in relay control circuit, faulty starter relay. Estimated repair cost: $6–28.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$6–28 (est.)

Symptoms

  • Problems starting the engine
  • Relay clicks when trying to start
  • Check Engine Light Is On
  • Engine won't start
  • Intermittent starting problems

Causes

  • Short circuit in relay control circuit
  • Faulty starter relay
  • Problems with wiring or contacts
  • Engine control unit malfunction
  • Corrosion in electrical connections

How to Fix

  1. Check the condition of the starter relay
  2. Inspect the wiring and connections in the control circuit
  3. Check the voltage on the relay control wire
  4. Replace the starter relay if necessary
  5. Check the operation of the engine control unit

Related codes

FAQ

What does the P16F5 code mean?

P16F5 is an OBD-II diagnostic trouble code that indicates: Starter Cut Relay 1 Control Circuit High Voltage

What causes a P16F5 error code?

The most common causes of P16F5 include: Short circuit in relay control circuit; Faulty starter relay; Problems with wiring or contacts; Engine control unit malfunction.

How do I fix a P16F5 diagnostic trouble code?

To fix P16F5: Check the condition of the starter relay. Inspect the wiring and connections in the control circuit. Check the voltage on the relay control wire. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P16F5?

Limited driving only, diagnose soon

How much does it cost to fix P16F5?

The estimated repair cost for P16F5 is $6–28. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat