P3220moderate severityPowertrain
Electric Motor/Generator A Temperature Sensor Circuit
on 2010 Toyota Highlander 3.3L V6 Hybrid · AWD
What this code means
The temperature sensor for the primary motor/generator (MG1) is reporting values outside the expected range.
Symptoms
- Hybrid/EV warning light
- Motor power derated
- Reduced acceleration
- Limp mode
- Motor protection mode active
- Regenerative braking limited
Common causes
- Faulty motor temperature sensor
- Corroded sensor connector
- Sensor wiring damage
- Sensor shorted internally
- ECU analog input failure
Diagnostic steps
- Read motor temperature PID
- Compare sensor reading to infrared measurement
- Test sensor resistance vs temperature spec
- Inspect connector and wiring
- Check for shorts in wiring harness
Repair notes
Replace motor temperature sensor. Requires partial disassembly of motor housing on some designs.
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