Fuel Injector Group Supply Voltage Circuit/Open
The P2152 code indicates that the powertrain control module (PCM) has detected an open or short circuit in the supply voltage circuit for a group of fuel injectors. This typically affects multiple injectors simultaneously, leading to insufficient fuel delivery to the engine. The issue may stem from a faulty injector driver, damaged wiring, or a failed PCM. It is critical to address promptly to prevent engine misfires and potential catalytic converter damage.
01. Most Common Causes
- Open or shorted wiring in the injector supply circuit
- Faulty fuel injector driver module
- Corroded or loose connector at the injector group
- Failed PCM (rare)
02. Symptoms You Will Notice
- Engine misfire or rough idle
- Check Engine Light illuminated
- Poor acceleration and reduced fuel economy
- Engine may not start or stalls frequently
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm P2152 and check for related codes.
Step 2: Visually inspect the wiring and connectors for the affected injector group for damage or corrosion.
Step 3: Measure voltage at the injector group connector with a multimeter; should be battery voltage with key on.
Step 4: Test continuity and resistance in the supply circuit; compare to manufacturer specs.
Step 5: If wiring is intact, test the injector driver module or PCM per service manual.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, driving with P2152 can cause engine misfires, poor performance, and potential damage to the catalytic converter. It is recommended to have the vehicle towed to a repair shop.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and minor repairs like wiring fixes. If the injector driver module or PCM needs replacement, costs can exceed $500.