P0A1C

Drive Motor B Control Module Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$167–556 (est.)

Symptoms

Check Engine light comes on
Hybrid system power reduction
The car goes into emergency mode
Unusual noises from the electric motor
Reduced performance of the hybrid system

Causes

Engine control module B fault
Module power problems
Open or short circuit in control circuits
Wiring harness damage
Software failures in the module

How to Fix

Engine Control Module B Diagnosis
Checking power and grounding circuits
Checking the integrity of the wiring harness
Module software update
Replacing the control module if necessary

Related codes

P0A1D P0A1B P0A1A