Fuel Injector Group B Supply Voltage Circuit Low

Where it lives

For P2150, the circuit described runs through the injector. The description of P2150 reports a fault at the injector.

Check these first

• A short or open in the fuel injector group B supply voltage circuit
• Corrosion in the group B injector wiring or connectors
• A failed fuel injector in group B
• A low battery or a weak charging system
• A failed injector driver module

What to do next

1. Read the group B injector supply voltage on a scan tool
2. Test the group B supply circuit for a short to ground
3. Check the battery and charging voltage
4. Measure the resistance of the group B injectors
5. Replace the group B injector driver module if the circuit tests good
6. Clear the code and retest

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