The P2152: Fuel Injector Group ‘C’ Supply Voltage Circuit/Open indicates that there is an open circuit or loss of voltage in the fuel injector group ‘C’ supply circuit. This could be caused by faulty wiring, a malfunctioning injector, or an issue with the power supply to the fuel injectors, affecting engine performance.
P2152 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P2152: Fuel Injector Group ‘C’ Supply Voltage Circuit/Open |
| Is it serious? | Yes, it can lead to engine misfires, poor performance, or failure to start due to improper fuel injection. |
| Possible causes | – Open circuit in the fuel injector group ‘C’ supply voltage – Faulty fuel injector group ‘C’ or wiring – Issues with the power supply |
| How to diagnose? | – Inspect wiring and connectors for the fuel injector group ‘C’ supply – Test the fuel injector group ‘C’ for faults – Check the power supply to the injectors |
P2152 Meaning
The P2152 code signals that the voltage supply to fuel injector group ‘C’ has been disrupted due to an open circuit. This can prevent the injectors from delivering fuel properly, leading to poor engine performance, misfires, or stalling. The issue may result from faulty wiring, bad injectors, or power supply faults.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional fault codes related to the fuel injectors or power supply. These may provide more context for the issue. | OBD-II Scanner |
| Inspect Wiring and Connectors | Visually inspect the wiring and connectors for fuel injector group ‘C’ for signs of damage, loose connections, or corrosion. Repair or replace as needed. | Flashlight, Multimeter |
| Measure Voltage at Injectors | Use a multimeter to measure the voltage at the fuel injectors in group ‘C’. Compare the readings to manufacturer specifications to confirm whether voltage is present. | Multimeter |
| Test Fuel Injectors | Use a diagnostic tool to test the performance of the fuel injectors in group ‘C’. Replace any injectors that are not functioning within specifications. | Diagnostic Tool, Multimeter |
| Check Power Supply Components | Inspect the power supply components (fuse, relay, ECU) that provide power to the injectors. Ensure these components are functioning properly and delivering the necessary voltage. | Multimeter, Wiring Diagram |
| Check for Open Circuits | Use a multimeter to perform continuity tests on the wiring to detect any open circuits that could be causing the voltage loss in group ‘C’. Repair as needed. | Multimeter, Wiring Diagram |
| Clear the Code and Test Drive | After completing repairs or adjustments, clear the code using an OBD-II scanner and take the vehicle for a test drive to verify that the issue has been resolved. | OBD-II Scanner |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure the P2152 code has not returned. | OBD-II Scanner |
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