OBD Guide

P26A0

Exhaust Aftertreatment Glow Plug Performance

P26A0 is an OBD-II diagnostic trouble code meaning: Exhaust Aftertreatment Glow Plug Performance. Common causes: exhaust system glow plug malfunction, open or short circuit in the spark plug circuit. Estimated repair cost: $22–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • Check Engine Light Is On
  • Reduced diesel particulate filter regeneration efficiency
  • Increased fuel consumption
  • Reduced engine power
  • Increased emissions

Causes

  • Exhaust system glow plug malfunction
  • Open or short circuit in the spark plug circuit
  • Relay or fuse problems
  • Engine control unit malfunction
  • Poor contact in wiring connectors

How to Fix

  1. Check glow plug resistance
  2. Inspect wiring and connectors for damage
  3. Check fuses and relays
  4. Scan the control unit for errors
  5. Replace a faulty glow plug

Related codes

Error P26A0 by Vehicle Brand

FAQ

What does the P26A0 code mean?

P26A0 is an OBD-II diagnostic trouble code that indicates: Exhaust Aftertreatment Glow Plug Performance

What causes a P26A0 error code?

The most common causes of P26A0 include: Exhaust system glow plug malfunction; Open or short circuit in the spark plug circuit; Relay or fuse problems; Engine control unit malfunction.

How do I fix a P26A0 diagnostic trouble code?

To fix P26A0: Check glow plug resistance. Inspect wiring and connectors for damage. Check fuses and relays. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P26A0?

Yes, but get it checked soon

How much does it cost to fix P26A0?

The estimated repair cost for P26A0 is $22–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat