P0CAD code meaning
Hybrid/EV Battery Temperature Sensor N Circuit
Powertrain system Generic code P0Cxx codes Check engine light
What P0CAD means
P0CAD stands for an electrical problem with battery temperature sensor N that the controller cannot assign to a specific failure type. Public manufacturer documentation for this exact code does not exist. GM's 2011 hybrid rationality list places N fourteenth among sixteen sensors, while its tables from 2012 onward cover N only with the specific codes P0CAE to P0CB1. On the plug-in Outlander, Mitsubishi equates N with module sensor [13] and likewise separates only rationality, short and open. CARB section (e)(15.3.1) is the basis for permanent monitoring of such input circuits. A pack controller without this reading has to plan conservatively for that section. Because the sensor lives inside the traction battery, checks are made only after the high-voltage system has been isolated.
P0CAD at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 5 hours
- Clears after repairAfter a drive cycle
Symptoms of P0CAD
- Hybrid or EV system message
- Battery power reduced until repaired
Common causes of P0CAD
- Most likelyConnector or wire fault between sensor N and the monitoring board
- PossibleThermistor N defective
- Less likelyFaulty input channel of the cell monitoring board
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery temp sensor nWiring harnessBms
What each part of P0CAD means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| C | Area: hybrid propulsion. |
| AD | The exact fault in that area. |
What to do next
- Note P0CAD and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0CAD
What does P0CAD mean?
P0CAD means "Hybrid/EV Battery Temperature Sensor N Circuit". P0CAD stands for an electrical problem with battery temperature sensor N that the controller cannot assign to a specific failure type. It is a generic code, so it means the same on every make.
Is it safe to drive with P0CAD?
Drive gently and only to a workshop. With P0CAD the car can go into limp mode (reduced power) to protect itself.
Will P0CAD fail an emissions test?
Yes, it can. P0CAD is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0CAD to fix?
Difficulty: workshop only. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P0CAD clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.