P2D9B

Starter/Generator Phase U Current Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–278 (est.)

Symptoms

Unstable operation of the start-stop system
Problems starting the engine
Check Engine Light Is On
Reduced generator efficiency
There may be interruptions in the operation of the vehicle's electrical system

Causes

Damage to wiring in phase U circuit
Poor contact in connectors
Starter-generator malfunction
Problems with the control unit
Short circuit in the circuit

How to Fix

Check the integrity of the wiring in the phase U circuit
Inspect and clean connector contacts
Check the resistance of the starter-generator winding
Scan the control unit for errors
If necessary, replace the starter-generator

Related codes

P2D9A P2D9C P2D9D