P0E44Hybrid/EV Battery Pack Voltage Sense E Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0E44 is the basic circuit code for the fifth pack voltage measurement, channel E, which follows channels A to D (P0ABA, P0B14, P0B19, P0B1E) in the code list. The battery controller stores it when this input is electrically unusable, for example open, without a plausible raw value or failing a self-test of its measuring stage, and none of the more specific low, high or erratic codes fits. No manufacturer documents P0E44 publicly, and which tap a maker labels E is its own decision. CARB requires every voltage sensor of the hybrid energy storage system to be monitored as an input component, with codes narrowing the fault down to a replaceable part. Without this value the controller restricts or blocks high-voltage operation.
- What you may notice
- Hybrid or high-voltage system warning lit
- Reduced electric assist or limited battery power
- Vehicle may not switch to ready mode
- Likely causes
- LikelyOpen or unplugged voltage sense lead or connector inside the pack
- PossibleFaulty measuring stage or input of the battery controller
- RareBlown fuse or open resistor in the sense path
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- 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.