P0561

System Voltage Unstable

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Unstable engine operation
Startup problems
Dashboard flashing or turning off
Reduced system efficiency

Causes

Faulty generator
Battery problems
Damaged wiring harness
Battery terminal corrosion
Faulty relays or fuses

How to Fix

Check the voltage on the battery with the engine running (should be 13.5-14.5 V)
Inspect the battery terminals for corrosion
Check the condition of the alternator belt
Diagnose the generator for faults
Check wiring harness for damage

Related codes

P0562 P0563 P0620