P0E46Hybrid/EV Battery Pack Voltage Sense E Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0E46 is stored when pack voltage measurement E reads below the lowest value the connected battery could physically present. That points to the measuring path, such as a sense lead shorted to ground, a blown sense fuse or a failed input stage, not to an empty battery. No manufacturer documents P0E46 publicly. On GM's 2013 two-mode hybrid trucks the comparable channel A code P0ABC sets below 40 V, but only after the contactors have been closed for more than 200 ms, and needs 300 failures in 400 samples at 10 ms, Type A, one trip. CARB requires out-of-range checks for battery voltage sensors. The high counterpart is P0E47; a pack that is really deeply discharged sets its own codes such as P0AFA. Hybrid operation may be blocked.
- What you may notice
- Vehicle does not become ready to drive or drops out of ready mode
- Hybrid system warning and MIL lit
- Electric drive or engine assist unavailable
- Likely causes
- LikelySense lead of channel E shorted to ground or chassis
- PossibleBlown fuse or open resistor in the sense path pulling the reading down
- RareDefective input stage of the battery controller
- 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.