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 |
|---|---|---|
| P0429 | Catalyst Heater Control Circuit/Open Bank 1 | 4 ranked fixes |
| P0439 | Catalyst Heater Control Circuit/Open Bank 2 | 4 ranked fixes |
| P04F2 | Catalyst Heater Supply Voltage Bank 1 | 4 ranked fixes |
| P04F3 | Catalyst Heater Supply Voltage Bank 2 | 4 ranked fixes |
| P04F4 | Catalyst Heater Circuit Low Bank 1 | 4 ranked fixes |
| P04F5 | Catalyst Heater Circuit Low Bank 2 | 4 ranked fixes |
| P04F6 | Catalyst Heater Circuit High Bank 1 | 4 ranked fixes |
| P04F7 | Catalyst Heater Circuit High Bank 2 | 4 ranked fixes |
| P04F8 | Catalyst Heater Circuit Intermittent Bank 1 | 4 ranked fixes |
| P04F9 | Catalyst Heater Circuit Intermittent Bank 2 | 4 ranked fixes |
| P04FE | Catalyst Heater Circuit Performance Bank 1 | 4 ranked fixes |
| P04FF | Catalyst Heater Circuit Performance Bank 2 | 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:
est_parts_cost_min/max_usd)est_labor_hours)