OBD Guide

P133C

Cylinder 5 Glow Plug Offset Exceeded Learning Limit

P133C is an OBD-II diagnostic trouble code meaning: Cylinder 5 Glow Plug Offset Exceeded Learning Limit. Common causes: faulty glow plug in cylinder 5, open or short circuit in the glow plug circuit. Estimated repair cost: $6–28.

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

Symptoms

  • Difficulty starting the engine, especially in cold weather
  • Unstable engine idling
  • Increased engine vibration
  • Reduced engine power
  • Check Engine Light Illuminates

Causes

  • Faulty glow plug in cylinder 5
  • Open or short circuit in the glow plug circuit
  • Poor contact in the glow plug connector
  • Faulty glow plug relay
  • Problems with the engine control unit

How to Fix

  1. Check the resistance of the glow plug of cylinder 5
  2. Inspect the electrical circuit of the spark plug for damage
  3. Check the contacts in the glow plug circuit connectors
  4. Test the glow plug relay
  5. If necessary, replace the glow plug

Related codes

FAQ

What does the P133C code mean?

P133C is an OBD-II diagnostic trouble code that indicates: Cylinder 5 Glow Plug Offset Exceeded Learning Limit

What causes a P133C error code?

The most common causes of P133C include: Faulty glow plug in cylinder 5; Open or short circuit in the glow plug circuit; Poor contact in the glow plug connector; Faulty glow plug relay.

How do I fix a P133C diagnostic trouble code?

To fix P133C: Check the resistance of the glow plug of cylinder 5. Inspect the electrical circuit of the spark plug for damage. Check the contacts in the glow plug circuit connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P133C?

Yes, but get it checked soon

How much does it cost to fix P133C?

The estimated repair cost for P133C is $6–28. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat