P0171 Chevrolet Silverado 3 Diagnostic Trouble Code

P0171 Chevrolet Silverado 3 code definition:
P0171 is a kind of OBD-II Diagnostic P-Powertrain Diagnostic Trouble Code for Chevrolet Silverado 3.

P0171 Chevrolet Silverado 3 is triggered when the bank 1 camshaft position sensor doesn't match the signal from the crankshaft position sensor. The PCM then uses this data to provide the right strategies for the fuel delivery and ignition timing of the engine.

Symptoms

Symptoms of a P0171 Chevrolet Silverado 3 diagnostic trouble code may include:
Place of P0171 in engine

Possible Causes :

  • A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
  • Faulty IMRC actuator relay (if equipped)
  • Fuel with a large percentage of sulfur will clog the DPF quickly

Common Misdiagnoses

  1. TP Sensor Learn Not Complete Problem
  2. Low Coolant Circuit Problem
  3. Cruise Control System - Vehicle Accel Too High Problem
  4. TFP Valve Position Switch-Drive Without Drive Ratio Problem
  5. Problem

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector.

Process Tips

Diagnostic trouble code P0171 Chevrolet Silverado 3 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before P0171 Chevrolet Silverado 3.

Fortunately, P0171 Chevrolet Silverado 3 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

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