U0338 Bmw Serie 2 Diagnostic Trouble Code

U0338 Bmw Serie 2 code definition:
U0338 is a kind of OBD-II Diagnostic U-Network Diagnostic Trouble Code for Bmw Serie 2.

U0338 Bmw Serie 2 is described as Oxygen Sensor Circuit No Activity Detected Bank 2 Sensor 1. This code appears when the PCM (powertrain control module, also known as ECM or engine control module in other brands) remains at or close the 0.450 set voltage point. Other symptoms that may indicate this problem are when the Check Engine Light illuminates and when there is a visible lack of engine power.

Symptoms

Symptoms of a U0338 Bmw Serie 2 diagnostic trouble code may include:
  • Diminished fuel efficiency
  • Fuel pressure too high
  • Malfunction Indicator Lamp (MIL) illuminated
  • Misfire
Place of U0338 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.
  • Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

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 damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code U0338 Bmw Serie 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 U0338 Bmw Serie 2.

Fortunately, U0338 Bmw Serie 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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