P0D5FHybrid/EV Battery Pack Cooling Fan 2 Sense Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Where a traction battery is cooled by two fans, each one can report its actual speed back to the controller on a separate sense line. P0D5F is the general circuit code for that return path of fan 2: the line is open or delivers nothing the controller can evaluate. No manufacturer documents P0D5F publicly. Volkswagen's 2014 Touareg Hybrid reads the same fan 2 feedback as a voltage but only defines P0D60 to P0D62, and Toyota patents show why the signal matters: measured fan speed is compared with the speed the duty command should give. CARB requires electrical inputs of battery thermal management to be monitored. Fan 2 may keep turning, yet its operation can no longer be confirmed, so the pack may be protected by reduced power. Drive-side faults of fan 2 are P0A96 and its siblings; fan 1 feedback uses P0BC7 to P0BCB.
- What you may notice
- Hybrid system warning or check engine light
- Reduced electric assist or charging power when the battery warms up
- Often no noticeable change while fan 2 still runs
- Likely causes
- LikelyBroken feedback wire or terminal pushed out at the fan 2 connector
- PossibleCorroded or loose connector between fan 2 and the battery controller
- PossibleSpeed signal output inside the fan 2 motor electronics failed
- RareFeedback input of the battery control module defective
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €40 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.