OBD-II code · Powertrain (generic, extended)
P2AF9 Starter Relay D Control Circuit High
Starter relay D reports a control circuit high condition. Engine cranking can be inhibited or commanded unintentionally.
Is it safe to drive with P2AF9?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyControl wire shorted to B+
- PossibleOpen relay coil
- Less likelyConnector pins corroded - high contact resistance
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 D, Wiring Harness, Ecm
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.