P0C97Hybrid/EV Battery Temperature Sensor L Circuit
- 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
- P0C97 is the catch-all for battery temperature sensor L, used when the input misbehaves electrically but fits none of the low, high or erratic categories. No manufacturer publishes this exact code. GM's 2011 hybrid table counts L as temperature sensor 12 of sixteen, and its 2012 and later tables cover L only with P0C98 to P0C9B. Mitsubishi's Outlander PHEV DTC list goes from sensor [10] (P0C93 to P0C95) straight to sensor [12] (P0CA9 onward), so it uses no L codes at all. CARB paragraph (e)(15.3.1) demands constant supervision of plausibility and circuit integrity for inputs like this. A pack controller that loses sensor L assumes a worst-case temperature for that section and reduces available power until the fault is repaired.
- What you may notice
- Hybrid or EV warning, possibly with check-engine lamp
- Limited battery power
- Likely causes
- LikelyConnector fault between sensor L and the monitoring board
- PossibleThermistor L defective
- RareFaulty measuring channel on the monitoring board
- 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: €150 – €2,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.