P0AF4

Drive Motor Inverter Temperature Sensor B Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Reduced motor power
Limitation of hybrid system operation
Inverter overheating
Incorrect temperature readings in diagnostics

Causes

Inverter temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in connectors
Wiring Harness Problems
Control unit malfunction

How to Fix

Check the integrity of the sensor circuit
Check contacts in connectors
Measure sensor resistance
Check the sensor signal with an oscilloscope
Replace temperature sensor if necessary

Related codes

P0AF3 P0AF5 P0AF6