These 12 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 12 times.
| Code | Definition | Repair coverage |
|---|---|---|
| P2B72 | Coolant Heater A Control Circuit/Open | 4 ranked fixes |
| P2B73 | Coolant Heater A Control Circuit Low | 4 ranked fixes |
| P2B74 | Coolant Heater A Control Circuit High | 4 ranked fixes |
| P2B75 | Coolant Heater A Control Circuit Performance | 4 ranked fixes |
| P2B76 | Coolant Heater B Control Circuit/Open | 4 ranked fixes |
| P2B77 | Coolant Heater B Control Circuit Low | 4 ranked fixes |
| P2B78 | Coolant Heater B Control Circuit High | 4 ranked fixes |
| P2B79 | Coolant Heater B Control Circuit Performance | 4 ranked fixes |
| P2DA4 | Coolant Heater A Internal Control Module Performance | 4 ranked fixes |
| P2DA5 | Coolant Heater A Supply Voltage Circuit | 4 ranked fixes |
| P2DA6 | Coolant Heater A Over Temperature | 4 ranked fixes |
| P2DA7 | Coolant Heater A Control Module System Voltage | 4 ranked fixes |
This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:
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