P06E4Control Module Wake-up Circuit Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- How the car detects it
- Control modules are woken by a dedicated wake-up line or a network wake-up – at ignition on, when a charging cable is plugged in, or on a timer for engine-off diagnostics and battery management. P06E4 means this wake-up signal is implausible: the module wakes too late or not at all, stays awake, or the line state does not match the network status. In practice the code appears mainly on hybrids: FCA fixes it on the Pacifica plug-in hybrid and the Wrangler 4xe with module software, where it remained as a permanent code that blocked emission inspections; GM's hybrid integration module lists it as a fault bundle. No manufacturer publishes thresholds or timing.
- What you may notice
- Check engine light
- Permanent code blocks emission inspection
- Possibly battery drain (module stays awake)
- Likely causes
- LikelyModule software (false setting, permanent code does not clear)
- PossibleWake-up line or connector open or shorted
- PossibleWeak 12 V battery, voltage dips at wake-up
- RareEngine or hybrid control module faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.