OBD-II code · Powertrain (generic, extended)

P2AF5 Starter Relay C Stuck On

Starter relay C reports a stuck on condition. Engine cranking can be inhibited or commanded unintentionally.

Is it safe to drive with P2AF5?

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

Common causes

  • Most likelyRelay contacts welded closed
  • PossibleOutput driver stuck on
  • Less likelyCarbon or debris buildup preventing free movement

Repair at a glance

Difficulty
Easy
DIY friendly
Often, with basic tools
Typical labour
0.3–1.5 h
Emissions test
Usually unaffected
Parts involved
Starter Relay C, Wiring Harness, Ecm

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