P0A91

Drive Motor B Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Power reduction
Increased fuel consumption
Check Engine light comes on
Unstable operation of the hybrid system
Problems with regenerative braking

Causes

Motor B fault
Inverter problems
Wiring harness damage
Malfunction of rotor position sensors
Problems with the control module

How to Fix

Check the condition of motor B
Diagnose the inverter
Check the integrity of the wiring harness
Check rotor position sensors
Scan the control module for errors

Related codes

P0A90 P0A92 P0A93