P2D87Fan 1 Control Module Over Temperature
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- Current electric radiator fans carry their own electronics, which turn the PWM or LIN request of the engine controller into motor current. P2D87 means this control module of fan 1 reports that it has become too hot. The supplier Brose, for example, rates its brushless fan modules with built-in LIN or PWM electronics for stable output up to 120 °C, so overheating points to a stiff or blocked motor drawing too much current, poor airflow at the radiator or an ageing power stage. No vehicle maker publicly documents P2D87 in this sense; Deutz uses the same number in its MD1 engine list for an unrelated fan drive output fault. CARB requires such output devices to be checked for correct response. A hot module usually cuts fan speed, so coolant temperature and air conditioning suffer. Fan 2 has P2D8A.
- What you may notice
- Fan runs slower or switches off temporarily
- Rising coolant temperature in slow traffic
- Weaker air conditioning at standstill
- Likely causes
- LikelyWorn bearings or debris make the fan motor stiff, so the module overheats from excess current
- PossibleClogged radiator or condenser fins, missing air guides, heat build-up at standstill
- PossibleAgeing power stage or thermal contact inside the fan control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €150 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.