P0ECCHybrid/EV Battery E Voltage
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0ECC is the general voltage code for hybrid/EV battery E. The letters A to F mark separately monitored sub-batteries, modules or energy stores of one system; E is the fifth, so the code can only occur where a manufacturer divides its storage into at least five such units. It signals a voltage of this unit that does not fit expectation, without saying whether it fluctuates (P0ECD), sits too low (P0ECE) or too high (P0ECF). No manufacturer documents P0ECC publicly. CARB asks for monitoring of the cells and voltage sensors of hybrid storage with codes that name the smallest replaceable unit, which explains such letter series. As a pack-level reference, GM's P0ABB compares pack voltage with the cell sum at a 12 V limit. The driver sees a battery warning.
- What you may notice
- Battery or hybrid warning, MIL
- Reduced electric power and range
- Likely causes
- PossibleAged or damaged cells in unit E
- PossibleFault in the voltage sense leads or connectors of unit E
- RareBattery controller measuring or software fault
- 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 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.