Fuel Injector Group Supply Voltage Circuit High
The P216F 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 a group of fuel injectors, typically through a fuse or relay. A high voltage condition can be caused by a short to voltage, a faulty voltage regulator, or a malfunctioning PCM. This can lead to excessive current flow, potentially damaging injectors or the PCM.
01. Most Common Causes
- Short to voltage in the injector group supply circuit
- Faulty PCM or voltage regulator
- Corroded or damaged wiring/connectors
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine misfire or rough idle
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to retrieve all codes and freeze frame data.
Step 2: Visually inspect the injector group supply circuit for shorts, damage, or corrosion.
Step 3: Measure voltage at the injector group supply circuit with a multimeter; compare to manufacturer specs.
Step 4: Check the injector group fuse and relay for proper operation.
Step 5: If voltage is high, isolate the circuit to identify the short or faulty component.
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 the PCM, leading to costly repairs.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, depending on the cause (e.g., wiring repair, PCM replacement).