Fuel Injector Group Supply Voltage Low
The P216E 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 circuit provides power to the injectors, and low voltage can cause improper fuel delivery, leading to engine performance issues. The problem may stem from a faulty injector driver, damaged wiring, poor electrical connections, or a failing PCM.
01. Most Common Causes
- Faulty fuel injector driver module
- Damaged or corroded wiring/connectors in the injector supply circuit
- Blown fuse or relay for injector power
- Failing PCM (powertrain control module)
02. Symptoms You Will Notice
- Engine misfire or rough idle
- Check Engine Light illuminated
- Poor fuel economy
- Hard starting or stalling
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to confirm the code and check for related codes.
Step 2: Visually inspect the injector wiring harness and connectors for damage, corrosion, or loose connections.
Step 3: Test the voltage at the injector supply circuit with a multimeter (should be near battery voltage with key on).
Step 4: Check the injector driver module and related fuses/relays for proper operation.
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 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 $50 to $150 for diagnosis and repair, depending on the root cause (e.g., wiring repair vs. module replacement).