Fuel Injector Group Supply Voltage Circuit/Open
The P216D code indicates that the powertrain control module (PCM) has detected an open or short circuit in the supply voltage circuit for a group of fuel injectors. This can cause the injectors to not receive proper voltage, leading to misfires, poor fuel economy, and potential engine damage if not addressed.
01. Most Common Causes
- Blown fuse or fusible link for injector power supply
- Open or shorted wiring in the injector harness
- Faulty fuel injector driver module or PCM
- Corroded or loose connector pins at injectors or PCM
02. Symptoms You Will Notice
- Engine misfire or rough idle
- Check Engine Light illuminated
- Decreased fuel economy
- Engine may not start or stalls
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect fuses and relays related to fuel injector power supply.
Step 3: Visually check wiring and connectors for damage, corrosion, or loose connections.
Step 4: Use a multimeter to test voltage at the injector harness connector with key on.
Step 5: Perform a continuity test on the injector circuit from PCM to injector.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not recommended. Driving with a faulty injector supply circuit can cause misfires, catalytic converter damage, and potential engine stalling.
How much does it cost to fix?▼
The cost typically ranges from $150 to $400, depending on the cause. Simple fuse replacement is cheap, but wiring repairs or PCM replacement can be more expensive.