The P216B: Fuel Injector Group ‘E’ Supply Voltage Circuit Low refers to a condition where the voltage supplied to fuel injector group ‘E’ is lower than expected. This could be caused by low voltage in the circuit, faulty fuel injectors, or wiring and power supply issues.
P216B – Quick Overview
| Code | Information |
|---|---|
| Meaning | P216B: Fuel Injector Group ‘E’ Supply Voltage Circuit Low |
| Is it serious? | Yes, this can lead to engine performance issues, misfires, or poor fuel delivery. |
| Possible causes | – Low voltage in the fuel injector group ‘E’ supply circuit – Faulty fuel injector group ‘E’ – Wiring or power supply issues |
| How to diagnose? | – Measure voltage in the fuel injector group ‘E’ supply circuit – Test the fuel injector group ‘E’ – Inspect wiring and connections for faults |
P216B Meaning
The P216B: Fuel Injector Group ‘E’ Supply Voltage Circuit Low code indicates that the engine control module (ECM) has detected a low voltage in the supply circuit for fuel injector group ‘E’. The fuel injectors rely on proper voltage to deliver the correct amount of fuel to the engine. Low voltage can cause poor engine performance, including rough idling, misfires, or difficulty starting the vehicle.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional related codes that may provide further insight into the issue. | OBD-II Scanner |
| Measure Voltage in Supply Circuit | Use a multimeter to measure the voltage in the fuel injector group ‘E’ supply circuit. Ensure the voltage is within the manufacturer’s specifications. | Multimeter, Vehicle Manual |
| Test Fuel Injector Group ‘E’ | Use a diagnostic tool to test the functionality of the fuel injectors in group ‘E’. Verify if they are operating correctly and receiving the proper voltage. | Multimeter, Diagnostic Tool |
| Inspect Wiring and Connections | Visually inspect the wiring and connections leading to fuel injector group ‘E’ for damage, loose connections, or corrosion that may cause low voltage. | Flashlight, Safety Gloves |
| Check Power Supply | Ensure the power supply to the fuel injectors is adequate. If the voltage is low, check for problems in the power delivery system. | Multimeter, Wiring Diagram |
| Repair or Replace Faulty Components | Repair or replace any faulty wiring, connections, or fuel injectors as needed to resolve the voltage issue. | Replacement Parts, Tools |
| Clear the Code and Test Drive | After completing the necessary repairs, clear the P216B code using an OBD-II scanner and take the vehicle for a test drive to verify the issue is resolved. | OBD-II Scanner |
| Recheck for Codes | After the test drive, re-scan the vehicle to ensure the P216B code has not returned. | OBD-II Scanner |
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