Fuel Injector Group Supply Voltage Circuit High
The P217F code indicates that the powertrain control module (PCM) has detected a voltage level in the fuel injector group supply circuit that is higher than the specified range. This circuit provides power to the injectors, and an overvoltage condition can be caused by a faulty voltage regulator, a short to voltage in the wiring, or a malfunctioning PCM. High voltage can damage injectors and other components.
01. Most Common Causes
- Faulty voltage regulator or alternator overcharging
- Short to voltage in the injector supply wiring or connector
- Malfunctioning PCM (less common)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine misfire, rough idle, or poor performance
- Possible fuel injector damage or failure
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm the code and check for related codes.
Step 2: Inspect the fuel injector supply circuit for shorts to battery voltage or damaged wiring/connectors.
Step 3: Test the charging system voltage; if over 14.5V, diagnose alternator/voltage regulator.
Step 4: If wiring and charging system are OK, suspect PCM fault and perform further diagnostics.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as high voltage can damage fuel injectors and other engine components, leading to costly repairs.
How much does it cost to fix?▼
Repair costs vary from $150 to $400 depending on the cause. Wiring repairs are cheaper, while PCM replacement is more expensive.