B0249 Volvo 164 Diagnostic Trouble Code

B0249 Volvo 164 code definition:
B0249 is a kind of OBD-II Diagnostic B-Body Diagnostic Trouble Code for Volvo 164.

B0249 Volvo 164 is defined as Ignition Coil B Primary/Secondary Circuit Malfunction.This code is a generic trouble code, meaning it applies to all vehicles equipped with OBD-II tool, or vehicles made since 1996 up to present. 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 B0249 Volvo 164 diagnostic trouble code may include:
  • Vacuum leak on the engine
  • Reduction in engine performance, especially at low RPM levels
  • Engine surge
  • The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Place of B0249 in engine

Possible Causes :

  • An air leak forward of the DPF will change the sensor readings resulting in the code
  • Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
  • Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Common Misdiagnoses

  1. IC Circuit High Voltage Problem
  2. Control Module Throttle Actuator Position Performance Problem
  3. Air Conditioning (A/C) Clutch Feedback Circuit High Voltage Problem
  4. Cruise Vehicle Speed/Set Speed Difference Too High Problem
  5. PCM Stack Overrun Problem

Repair Processes :

You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code B0249 Volvo 164 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 B0249 Volvo 164.

Fortunately, B0249 Volvo 164 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

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