What Does P217C Mean?
The PCM has detected an abnormally high voltage in the power supply circuit feeding fuel injector group G. This indicates a short to voltage or a fault in the injector driver circuit within the PCM.
Safety Warning
Vehicle may run extremely rough, misfire severely, or fail to start. Driving not recommended due to potential catalyst damage and loss of power.
Common Causes
35%
Shorted injector driver circuit in PCM
30%
Wiring harness short to voltage between PCM and injectors
20%
Failed fuel injector with internal short
15%
Corroded or damaged injector connector causing cross-circuit
Diagnostic Steps
1
Step 1: Disconnect injector group G connectors and measure supply voltage at PCM side - should read battery voltage with key on
2
Step 2: Check for short to voltage in wiring harness using multimeter between injector circuits and B+ with connectors disconnected
3
Step 3: Inspect injector connectors for corrosion, damage, or pin contact issues
4
Step 4: Measure resistance of each injector in group G - compare to specifications (typically 12-16 ohms)
5
Step 5: If wiring and injectors test normal, suspect PCM injector driver circuit failure requiring PCM replacement
Estimated Repair Cost
$200 - $1,500
Parts + labor, varies by vehicle and location
The PCM has detected an abnormally high voltage in the power supply circuit feeding fuel injector group G. This indicates a short to voltage or a fault in the injector driver circuit within the PCM.
The most common cause of P217C (Fuel Injector Group "G" Supply Voltage Circuit High) is: Shorted injector driver circuit in PCM
Typical repair costs for P217C range from $200 to $1,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may run extremely rough, misfire severely, or fail to start. Driving not recommended due to potential catalyst damage and loss of power.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P217C to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel System
Difficulty
Type
Generic (SAE)
Recommended Tools
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