P26A1

Exhaust Aftertreatment Glow Plug Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Increased fuel consumption
Problems starting in cold weather
Unstable engine operation

Causes

Faulty glow plug of the aftertreatment system
Short circuit in glow plug circuit
Wiring harness damage
Malfunction of the glow plug control module
Poor contact in connectors

How to Fix

Check glow plug resistance
Inspect wiring and connectors for damage
Check the voltage on the glow plug circuit
Replace faulty glow plug if necessary
Check the operation of the control module

Related codes

P26A0 P26A2 P26A3