P2AFA
Starter Relay D Stuck On
Starter relay D reports a stuck on condition. Engine cranking can be inhibited or commanded unintentionally.
Starter relay D reports a stuck on condition. Engine cranking can be inhibited or commanded unintentionally.
Common causes
- high
Relay contacts welded closed
One of the most commonly reported causes for this code — check this first.
Typical part cost: $30-220
- medium
Output driver stuck on
A plausible cause — test and verify before replacing parts.
Typical part cost: $30-220
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P2AFA mean?
P2AFA means "Starter Relay D Stuck On". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2AFA?
relay contacts welded closed; output driver stuck on; carbon or debris buildup preventing free movement — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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