Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
To diagnose the P129F Cadillac code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
The Fuel Pump Driver Control Module sends reports of the actual fuel pump speed to the Engine Control Module (ECM) as serial data every 10 ms. The ECM calculates the error between the commanded fuel pump speed and the fuel pump speed that was reported from the Fuel Pump Driver Control Module. A Diagnostic Trouble Code (DTC) will be set If the fuel pump speed is outside a calibrated threshold. The DTC will be set if the difference between the commanded fuel pump speed and actual fuel pump speed is outside a
the calibrated range for greater than 7 s.
Need more information on how to fix the P129F Cadillac code? Get Access to Factory Service Manuals
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