What Does P216C Mean?
The PCM has detected abnormally high voltage in the fuel injector group 'E' power supply circuit. This suggests an open injector circuit, loss of ground, or feedback voltage issue affecting proper injector control.
Safety Warning
Engine will run rough or fail to start due to non-functioning injectors in group E. Vehicle is unsafe to drive with severe misfiring and should not be operated until repaired.
Common Causes
30%
Open circuit in fuel injector coil or broken wire within injector group E
25%
Poor or open ground connection for fuel injector group E
20%
Damaged or disconnected injector connector in group E
15%
Open circuit or break in injector control wiring between PCM and injectors
10%
PCM internal driver circuit failure or open output stage
Diagnostic Steps
1
Step 1: Measure voltage at fuel injector group E connector with key on (should drop to near 0V when PCM commands injector on)
2
Step 2: Check continuity of ground circuit for injector group E from injectors to PCM ground
3
Step 3: Disconnect injectors in group E individually and test coil resistance (should be 12-16 ohms, not open)
4
Step 4: Inspect all injector connectors in group E for damage, bent pins, or loose connections
5
Step 5: Use oscilloscope or noid light to verify PCM is providing proper ground pulse signal to injectors
Estimated Repair Cost
$150 - $900
Parts + labor, varies by vehicle and location
The PCM has detected abnormally high voltage in the fuel injector group 'E' power supply circuit. This suggests an open injector circuit, loss of ground, or feedback voltage issue affecting proper injector control.
The most common cause of P216C (Fuel Injector Group "E" Supply Voltage Circuit High) is: Open circuit in fuel injector coil or broken wire within injector group E
Typical repair costs for P216C range from $150 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Engine will run rough or fail to start due to non-functioning injectors in group E. Vehicle is unsafe to drive with severe misfiring and should not be operated until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P216C to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel Injection System
Difficulty
Type
Generic (SAE)
Recommended Tools
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