P2DA5
Coolant Heater A Supply Voltage Circuit
Coolant heater A supply voltage circuit reports a fault. Heater may not start when commanded.
Coolant heater A supply voltage circuit reports a fault. Heater may not start when commanded.
Common causes
- high
Supply fuse blown
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-1320
- medium
Wiring fault
A plausible cause — test and verify before replacing parts.
Typical part cost: $220-1320
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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 P2DA5 mean?
P2DA5 means "Coolant Heater A Supply Voltage Circuit". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2DA5?
supply fuse blown; wiring fault — 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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