B0241 Bristol 403 Diagnostic Trouble Code

B0241 Bristol 403 code definition:
B0241 is a kind of OBD-II Diagnostic B-Body Diagnostic Trouble Code for Bristol 403.

B0241 Bristol 403 is triggered when the bank 1 camshaft position sensor doesn't match the signal from the crankshaft position sensor. This is because the barometric pressure sensor is part of the MAF sensor. Sometimes, the MAF's sensing wire can accumulate and get covered with dirt, dust and/or oil residue, which can also lead to the error code.

Symptoms

Symptoms of a B0241 Bristol 403 diagnostic trouble code may include:
  • Fuel pressure too high
  • Diminished fuel efficiency
  • Rich or lean exhaust
  • If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Place of B0241 in engine

Possible Causes :

  • Fuel with a large percentage of sulfur will clog the DPF quickly
  • The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
  • Faulty IMRC actuator relay (if equipped)

Common Misdiagnoses

  1. Vehicle Speed Output Circuit Problem
  2. Cruise Control Servo Indicates Low Problem
  3. A/C System High Pressure High Temperature Problem
  4. PCM Stack Overrun Problem
  5. Transmission Control Module Reprogrammable Memory Problem

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code B0241 Bristol 403 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 B0241 Bristol 403.

Fortunately, B0241 Bristol 403 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

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