Code Definition

P1217 — Fuel Solenoid response time too long

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: GM

About P1217

P1217 is a manufacturer-specific powertrain diagnostic trouble code recorded for GM vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1217 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The fuel solenoid inside an electronically controlled diesel injection pump is switched by the pump driver module, and the moment it physically seats produces an electrical signature that the Engine Control Module (ECM) uses to confirm when injection actually began. The ECM measures the interval between commanding the solenoid and detecting that closure and compares it with a calibrated window. DTC P1217 is set when that measured response time is consistently longer than expected, meaning the solenoid is taking too long to seat and injection is effectively starting later than the ECM intended....

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