P068D
Cylinder 7 Glow Plug Control Circuit High
The control line for the glow plug on cylinder 7 is open or shorted to supply - the plug cannot be heated.
The control line for the glow plug on cylinder 7 is open or shorted to supply - the plug cannot be heated.
Common causes
- high
Open in plug or wiring
One of the most commonly reported causes for this code — check this first.
Typical part cost: $70-280
- low
Connector pins corroded - high contact resistance
Less common, but worth ruling out after the more likely causes.
Typical part cost: $70-280
See all causes + fix costs
Create a free Wrenchify account to unlock the rest for P068D.
Unlock causesFree forever · No credit card
First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
Get the full step-by-step diagnosis
Create a free Wrenchify account to unlock the rest for P068D.
Unlock diagnosisFree forever · No credit card
Related codes
See related trouble codes
Create a free Wrenchify account to unlock the rest for P068D.
Unlock related codesFree forever · No credit card
Frequently asked questions
What does P068D mean?
P068D means "Cylinder 7 Glow Plug Control Circuit High". It is a generic OBD-II code that points to a fault in the computer & auxiliary output controls.
What are the most common causes of P068D?
open in plug or wiring; connector pins corroded - high contact resistance; supply wire pinched against b+ source — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
Get the full P068D diagnosis for your vehicle
Year, make, model + step-by-step repair help — free plan included.