OBD-II code · Powertrain (generic, extended)
P2DA5 Coolant Heater A Supply Voltage Circuit
Coolant heater A supply voltage circuit reports a fault. Heater may not start when commanded.
Is it safe to drive with P2DA5?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySupply fuse blown
- PossibleWiring fault
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Coolant Heater A, Coolant Heater A Control Module
Related codes
- P2DA2Gear Shift Control Module B Supply Voltage High
- P2DA3Gear Shift Control Module B Overtemperature
- P2DA4Coolant Heater A Internal Control Module Performance
- P2DA6Coolant Heater A Over Temperature
- P2DA7Coolant Heater A Control Module System Voltage
- P2DA8DC/AC Converter Control Module A Switch A Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.