P0E43Hybrid/EV Powertrain Control Module B
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0E43 is the module-B counterpart of P0A1D: it reports that a second hybrid/EV powertrain controller has detected an internal failure or can no longer be trusted. Vehicles with two such processors, for example GM's Bolt EV with a second powertrain module labelled K114B (HPCM2), are where the letter B makes sense. No manufacturer documents P0E43 publicly. The A code shows what is meant: GM's 2013 hybrid tables store P0A1D when a status message from motor control processor A reports a controller failure in 3 of 4 counts, Type B, and Ford's 2019 hybrid summary uses P0A1D when the serial link between its processors fails, checked continuously. CARB requires the MIL for computer faults that impair OBD. Reprogramming or module replacement is likely; power may be limited.
- What you may notice
- MIL and hybrid or EV system warning
- Reduced propulsion power or no ready mode
- Likely causes
- LikelyInternal processor or memory fault in module B
- PossibleSoftware fault curable by reprogramming
- RareSupply, ground or internal bus fault at the module
- 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 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.