P0AEBHybrid/EV Battery Temperature Sensor D Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0AEB reports that battery temperature sensor D delivers a voltage above its valid range. For GM's NTC sensors this reads as extreme cold, pointing to an open wire, a backed-out pin at the sensing board or a cracked thermistor. GM's 2016 and 2019 tables set it below -69 °C in 8 of 10 samples, the 2011 and 2013 two-mode hybrids below -45 °C in 30 of 40, the eAssist table 13OBDG05C above 4.63 V, about -45 °C, in 7 of 10, and a 2018 controller below -40 °C for 1.4 s within 2 s; all Type B, two trips. On the Chevrolet Volt, bulletin 18-NA-342 links such codes to a Battery Too Cold message above -25 °C ambient and prescribes reprogramming. A pack the controller believes frozen gets strict charge and power limits.
- What you may notice
- Malfunction indicator lamp after two trips
- Battery Too Cold message (Volt)
- Charging and electric drive restricted
- Likely causes
- LikelyOpen circuit or unplugged connector at sensor D
- PossibleOutdated controller software (GM Volt, bulletin 18-NA-342)
- PossibleTemperature sensor D open internally
- 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: €60 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.