Fuel Injector Group Supply Voltage Circuit Low
The P217E code indicates that the powertrain control module (PCM) has detected a low voltage condition in the supply circuit for a group of fuel injectors. This can be caused by a faulty injector driver, damaged wiring, poor electrical connections, or a failing PCM. The low voltage prevents the injectors from opening properly, leading to fuel delivery issues.
1. Most Common Causes
- Open circuit or short to ground in the power supply wiring for injector group H
- Blown fuse or faulty injector power relay
- Corroded, loose, or damaged connector at the injector or wiring harness
- Faulty injector control module (IDM/FCM), if applicable
- Failed PCM (rare)
2. Symptoms You Will Notice
- Engine misfire or rough idle
- Check Engine Light illuminated
- Poor fuel economy
- Engine hesitation or stalling
3. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm the code and check for related codes.
Step 2: Visually inspect wiring and connectors for damage, corrosion, or loose connections.
Step 3: Test the voltage at the injector group supply circuit with a multimeter (should be near battery voltage with key on).
Step 4: Check fuses and relays related to the injector power supply.
Step 5: If wiring and power supply are okay, test the injector driver circuit or PCM output.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it can cause engine misfires, poor performance, and potential damage to the catalytic converter.
How much does it cost to fix?▼
The cost typically ranges from $150 to $400 depending on the cause, with wiring repairs being cheaper and PCM replacement being more expensive.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.