P0675

Cylinder 5 Glow Plug Circuit/Open

Q: Is it safe to drive with P0675?

Usually yes, but cold starts will be harder and the engine may run rough and smoky when cold. Repair it before cold weather makes starting worse.

Q: Can I just clear P0675?

It returns once the module re-tests the circuit. The open plug or wiring needs to be repaired for the code to stay off.

Glow plug / diesel preheat Generic OBD-II High

What it means

P0675 is a diesel code meaning the control module detected an open (broken) circuit for cylinder 5's glow plug — most often a burned-out plug or broken wiring. Glow plugs preheat the cylinder for starting, so the main symptoms are hard cold starts and rough, smoky running until the engine reaches temperature.

High

Can I keep driving? Usually drivable — expect hard cold starts and rough, smoky running until warm; a single open glow plug rarely stops the engine from starting.

Real-world scan data

Seen in

128

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Appears alongside · share of P0675 scans

P0674in 54.7% of scans

P0673in 45.3% of scans

P0671in 43.0% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Difficulty starting, especially in cold weather
Rough running or a slight misfire until the engine warms up
White or grey exhaust smoke on cold starts
Check-engine or glow-plug warning light on

Common causes

Most likely first

Failed cylinder 5 glow plug (open circuit)Likely
Open or broken wiring in the cylinder 5 glow plug circuitCommon
Loose or corroded electrical connectionCommon
Faulty glow plug control moduleLess often

How to diagnose & fix

Work through it in order

Scan and confirm the code, and check whether other cylinders have glow-plug codes too.
Inspect the wiring and connector to the cylinder 5 glow plug for breaks or corrosion.
Measure the glow plug's resistance; an open (infinite) reading means it has failed and needs replacing.
If the plug and wiring test good, check the control module's output and feeds. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0675?+

Usually yes, but cold starts will be harder and the engine may run rough and smoky when cold. Repair it before cold weather makes starting worse.

Can I just clear P0675?+

It returns once the module re-tests the circuit. The open plug or wiring needs to be repaired for the code to stay off.

Read & clear P0675 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX