U3509

Control Module Input Power C Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$6–33 (est.)

Symptoms

Unstable engine operation
Problems starting the engine
Check Engine Light Is On
Malfunctions of electronic systems

Causes

Poor contact in connectors
Corroded or damaged wires
Faulty relay or fuse
Alternator or battery problems

How to Fix

Check and clean contacts in connectors
Inspect the wiring harness for damage
Check relays and fuses
Diagnose generator and battery

Related codes

U3508 U3510 U3511