P3283moderate severityPowertrain
HV Wiring Harness Temperature Sensor Fault
on 2012 Toyota Highlander 3.3L V6 Hybrid · AWD
What this code means
A temperature sensor embedded in the HV wiring harness to monitor cable temperature has malfunctioned.
Symptoms
- HV system may derate
- Cable temperature monitoring lost
- Warning message about HV system
- Potential for undetected cable overheat
- Power may be limited as precaution
Common causes
- Temperature sensor failure
- Sensor wiring break
- Connector corrosion
- Sensor shorted by moisture
- Harness damage near sensor
Diagnostic steps
- Read HV cable temperature sensor data
- Test sensor resistance
- Inspect HV harness near sensor location
- Check sensor connector for moisture
- Compare with adjacent temperature readings
Repair notes
Replace HV cable temperature sensor. Inspect HV harness for any heat damage in the sensor area.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1