C1010

Battery Undervoltage

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–222 (est.)

Symptoms

Dim headlights
Problems starting the engine
Malfunctions of electronic systems
Dashboard flashing

Causes

Low/defective battery
Faulty generator
Poor contact or corroded terminals
Open circuit in charging circuit
Voltage regulator malfunction

How to Fix

Check battery voltage (normal: 12.6V)
Test the generator for functionality
Clean terminals and check connections
Scan the system for other errors
Replace battery/alternator if necessary

Related codes

U0121 P0562 P0620