P2B2FFan 1 Performance/Stuck Off
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- Unlike the circuit codes P0480, P0691 and P0692, P2B2F judges the result: radiator fan 1 is commanded on but does not deliver, up to not turning at all. Detection uses fan speed feedback from a PWM or LIN fan module, or the missing temperature drop when the fan should be cooling. FCA lists P2B2F-00 with the MIL for the 2017–2018 Alfa Romeo Giulia and 2018 Stelvio with the 2.0 L turbo four (EC2) in bulletins 18-097-19 and 18-026-20, among other codes fixed by a PCM software update; no thresholds are published. CARB requires output components such as fans to be checked for proper functional response. Beyond software, a seized motor, debris in the blades or a failed fan module are the usual finds. Overheating in traffic and weak A/C at idle follow. The stuck-on case is P2B30.
- What you may notice
- MIL
- Rising coolant temperature in slow traffic
- Weak air conditioning at standstill
- Likely causes
- LikelyFan 1 motor worn or seized, or blades blocked by debris
- PossibleFan control module or relay not switching the motor
- PossibleEngine software judging the fan wrongly (FCA 2.0 L)
- RarePoor power feed or ground at the fan
- 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: €20 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.