P0C98Hybrid/EV Battery Temperature Sensor L Circuit Range/Performance
- 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
- P0C98 is the plausibility code for sensor L: its reading is electrically valid but strays too far from the other sensors. GM's table for the 2012 Volt (12OBDG01A) runs the comparison only after more than 21,600 s with propulsion, off-board charging and thermal conditioning all off; a deviation over 25.3 °C, seen in 50 of 67 samples, counts as a Type B failure. In 19OBDG02 from 2019 the limit becomes 25.00 °C with sampling every 25 ms and the same count, and the test pauses while circuit codes for the battery sensors or a lost link to the battery controller are present. Mitsubishi does not use this code. Sensor drift or a detached sensor are the common reasons; P0C99 and P0C9A cover electrical failures.
- What you may notice
- Warning lamp after a long standstill
- Reduced battery power
- Likely causes
- LikelyThermistor L drifted within its electrical range
- PossibleSensor L no longer in thermal contact with its cells
- RareGenuine local temperature difference in that pack section
- 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: €80 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.