Powertrain, generic

P0EBF A/C Refrigerant Temperature Sensor A Range/Performance

Check engine lightOn

EmissionsNot relevant

Drive cycleNot required

Limp modeNo

P0EBF reports that sensor A gives an electrically valid but implausible refrigerant temperature. Three makers name it. Audi stores P0EBF00 as passive or sporadic in the Climatronic module of the 2016 A3 e-tron; bulletin 2047037 blames a miscalculation in the refrigerant self-check and points to TSB 2046942. VW's 2021 ID.4 links it to the G395 sender, which is replaced. Volvo logs P0EBF24 in the engine module of its 2017 to 2019 S90, V60, XC60 and XC90, lighting the check engine lamp: when the car had been pre-heated or pre-cooled, or started remotely, while the traction battery was charged, the software misjudged the sensor, and Technical Journal 34446 ends with a software update. Circuit faults are P0EBC to P0EBE.

Likely causes

Software misjudgement after preconditioning or self-check (Volvo, Audi; update available)

Deviating pressure/temperature sender (VW G395)

Wrong refrigerant charge distorting the comparison values

Symptoms

Check engine lamp on (Volvo) or MIL requested by the climate module (Audi)
Fault stored as intermittent or sporadic
A/C may cool poorly or not at all

Repair estimate

DifficultyShop_onlyWorkshop job

Parts and labour€0–450

Time0.3–2.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

ac refrigerant temp sensor ahvac control moduleengine control module

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov.