P263B

MIL Control Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–56 (est.)

Symptoms

Check Engine Light Is On
The Check Engine light does not come on when the ignition is turned on.
Flashing Check Engine Light
Incorrect operation of the Check Engine indicator
Errors in the self-diagnosis system

Causes

Open or short circuit in MIL control circuit
Engine control unit (ECU) malfunction
Wiring harness damage
Malfunction of the Check Engine indicator itself
Circuit power problems

How to Fix

Check MIL control circuit continuity
Check the condition of the wiring harness for damage
Check the functionality of the Check Engine indicator
Check control circuit power supply
Diagnostics and possible replacement of the engine control unit (ECU)

Related codes

P263A P263C P263D