The P2153: Fuel Injector Group ‘C’ Supply Voltage Circuit Low refers to a condition where the voltage in the supply circuit for fuel injector group ‘C’ is lower than expected. This can be due to faulty wiring, a malfunctioning fuel injector, or power supply issues, which may lead to improper fuel delivery and engine performance problems.
P2153 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P2153: Fuel Injector Group ‘C’ Supply Voltage Circuit Low |
| Is it serious? | Yes, it can cause engine misfires, poor performance, or a failure to start due to improper fuel injection. |
| Possible causes | – Low voltage in the fuel injector group ‘C’ supply circuit – Faulty fuel injector group ‘C’ – Wiring issues or power supply problems |
| How to diagnose? | – Measure voltage in the fuel injector group ‘C’ supply circuit – Test the fuel injector group ‘C’ – Inspect wiring and connections for faults |
P2153 Meaning
The P2153 code signals that the voltage supplied to fuel injector group ‘C’ is lower than required. This issue can affect fuel delivery, resulting in engine performance problems such as misfires, rough idling, and poor acceleration. The cause could be a faulty fuel injector, wiring issues, or problems with the power supply to the injectors.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for other related codes that could provide additional information on the issue with the fuel injector group or power supply. | OBD-II Scanner |
| Measure Voltage in the Supply Circuit | Use a multimeter to measure the voltage at the fuel injectors in group ‘C’. Compare the readings with the manufacturer’s specifications to confirm if the voltage is lower than required. | Multimeter |
| Test the Fuel Injectors | Use a diagnostic tool to test the fuel injectors in group ‘C’. Replace any faulty injectors that are not functioning within the proper specifications. | Diagnostic Tool, Multimeter |
| 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 damaged components as necessary. | Flashlight, Multimeter |
| Check Power Supply Components | Inspect the power supply components, such as the fuse, relay, and ECU, to ensure they are functioning correctly and delivering the correct voltage to the injectors. | Multimeter, Wiring Diagram |
| Check for Shorts or Grounding Issues | Use a multimeter to check for any shorts to ground or open circuits in the wiring leading to the fuel injectors in group ‘C’. Repair any wiring faults causing low voltage. | 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 ensure that the issue is resolved. | OBD-II Scanner |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure the P2153 code has not returned. | OBD-II Scanner |
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