P2D41A/C Compressor Motor Voltage B Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- How the car detects it
- P2D41 is a plausibility check on the second voltage value that an electric A/C compressor reports for its motor drive: the reading is electrically valid but disagrees with a reference, for example the traction battery voltage or the first compressor voltage value. Which voltage the letter B stands for is up to the manufacturer; no manufacturer documents P2D41 on an official public source. GM shows the principle for voltage A in the Volt: P0D69 compares compressor input voltage with the pack voltage and fails above a 15 V gap (2011) or 30 V (2016), Type B. California only demands such monitoring where the compressor serves battery cooling or engine control. Low and high signal: P2D42, P2D43.
- What you may notice
- Hybrid or EV warning message, warning lamp depending on the manufacturer
- A/C cooling reduced or switched off
- Likely causes
- LikelyFaulty voltage measurement inside the compressor control module
- PossibleContact resistance at the high-voltage connector of the compressor
- RareImplausible reference value from the battery or hybrid control module
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.