C0535

Motor Control B Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Unstable engine operation
Power reduction
Increased fuel consumption
Check Engine Light Illuminates

Causes

Malfunction of internal ECU control circuits
Problems with wiring or sensor contacts
Incorrect sensor readings (mass air flow sensor, MAP, throttle position sensor)
Software failure or damage to ECU firmware

How to Fix

Check wiring harness and contacts associated with ECU
Read all errors in ECU memory
Check the sensor readings for compliance with the standard
Test the ECU on another car or replace it
Update or reflash ECU software

Related codes

P0606 P0607 P2122 P2127