OBD-II code · Powertrain (generic, extended)
P2AF3 Starter Relay C Control Circuit Low
Starter relay C reports a control circuit low condition. Engine cranking can be inhibited or commanded unintentionally.
Is it safe to drive with P2AF3?
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 ground
- PossibleInternal short in 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 C, Wiring Harness, Ecm
Related codes
- P2AF8Starter Relay D Control Circuit Low
- P2AF0Intake Air O2 Sensor Negative Current Control Circuit Low Bank 2
- P2AF1Intake Air O2 Sensor Negative Current Control Circuit High Bank 2
- P2AF2Starter Relay C Control Circuit/Open
- P2AF4Starter Relay C Control Circuit High
- P2AF5Starter Relay C Stuck On
- P2AF6Starter Relay C Stuck Off
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.