OBD-II code · Powertrain (generic)

P069D Cylinder 10 Glow Plug Control Circuit High

The control line for the glow plug on cylinder 10 is open or shorted to supply - the plug cannot be heated.

Is it safe to drive with P069D?

Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.

Common causes

  • Most likelyOpen in plug or wiring
  • Less likelyConnector pins corroded - high contact resistance
  • Less likelySupply wire pinched against B+ source

Symptoms

  • Glow plug warning light on (often orange coil symbol)
  • Hard cold start or no start in cold weather
  • White smoke from exhaust during warm-up

Repair at a glance

Difficulty
Easy
DIY friendly
Often, with basic tools
Typical labour
0.4–1.4 h
Emissions test
Likely to fail
Parts involved
Glow Plug Cyl 10

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.