OBD-II code · Powertrain (generic, extended)
P2DA7 Coolant Heater A Control Module System Voltage
The system voltage feedback of the coolant heater A control module is outside the expected window.
Is it safe to drive with P2DA7?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySystem voltage drifted
- PossibleFeedback wire 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
- P2DA4Coolant Heater A Internal Control Module Performance
- P2DA5Coolant Heater A Supply Voltage Circuit
- P2DA6Coolant Heater A Over Temperature
- P2DA8DC/AC Converter Control Module A Switch A Circuit
- P2DA9DC/AC Converter Control Module A Switch A Circuit Range/Performance
- P2DAADC/AC Converter Control Module A Switch B Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.