B2506 Diagnostic Trouble Code

B2506 is a kind of OBD-II Diagnostic B-Body Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a B2506 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

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. Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors.

Process Tips

Diagnostic trouble code B2506 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 B2506.

Fortunately, B2506 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2506 Trouble Code For Specific Cars

B2506 Roamer 4-75 Hydraulic Oil Temperature Sensor Circuit Low Input
B2506 Mazda Demio 2 Transmission Transfer Case Shift Motor Short Circuit To Battery
B2506 Plymouth Duster Evaporative Emission Control System Pressure Sensor Range/Performance
B2506 Honda Torneo Reverse Mirror Output Circuit Failure
B2506 Paramount 1.5-litre Driver Side Crash Sensor Communication Fault (Non SCP)
B2506 Datsun 280 HO2S Heater Control C ircuit (Bank 1 Sensor 2)
B2506 Ghia 450 Oil Change Reset Button Circuit Open