B0279 Renault Megane 2 Diagnostic Trouble Code

B0279 Renault Megane 2 code definition:
B0279 is a kind of OBD-II Diagnostic B-Body Diagnostic Trouble Code for Renault Megane 2.

B0279 Renault Megane 2 is defined as Cylinder 3 Injector Circuit Malfunction. This code means the PCM (powertrain control module, also known as ECM or engine control) has detected a problem in the injector or its wiring, or in injector circuit for cylinder 3. The spark should have a light tan color. If the sensor probe comes with white and chalky parts, this means it has been lagging between switching phases, and should be replaced.

Symptoms

Symptoms of a B0279 Renault Megane 2 diagnostic trouble code may include:
  • Reduction in engine performance, especially at low RPM levels
  • Vacuum leak on the engine
  • Diminished fuel efficiency
  • Poor fuel economy
Place of B0279 in engine

Possible Causes :

  • Faulty IMRC actuator/sensor
  • A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
  • Dirty air cleaner element Damaged DPF

Common Misdiagnoses

  1. Control Module Throttle Actuator Position Performance Problem
  2. Air Conditioning (A/C) Clutch Feedback Circuit High Voltage Problem
  3. Cruise Vehicle Speed/Set Speed Difference Too High Problem
  4. Kick-Down Switch Failed Short Problem
  5. Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit 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 damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code B0279 Renault Megane 2 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 B0279 Renault Megane 2.

Fortunately, B0279 Renault Megane 2 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

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