P1403 GMC Possible Causes
- Carbon blockage of the pintle
- Faulty Exhaust Gas Recirculation (EGR) valve
First diagnose P1403 GMC code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.
Cost of diagnosing the P1403 GMC code
Labor: 1.0The cost of diagnosing the P1403 GMC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
P1403 GMC Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1403 GMC MeaningThe Powertrain Control Module (PCM) monitors the Exhaust Gas Recirculation (EGR) valve pintle position input to ensure that the valve responds properly to commands from the PCM. When the ignition switch is turned ON, the PCM learns the EGR learned minimum position. The PCM compares the EGR learned minimum position to the EGR position sensor when the EGR valve is commanded closed.
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