B2724 Diagnostic Trouble Code

B2724 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 B2724 diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

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.
Fuel with a large percentage of sulfur will clog the DPF quickly

Repair Processes :

If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed.

Process Tips

Diagnostic trouble code B2724 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 B2724.

Fortunately, B2724 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2724 Trouble Code For Specific Cars

B2724 Sta Matilde Sm Lamp Headlamp Input Circuit Short To Ground
B2724 Fiat 520 Lamp Brake Warning Output Circuit Failure
B2724 Alfa Romeo Giulietta AG4 Transmission Torque Modulation Fault
B2724 Reliant Sabre Gate Select Control Error
B2724 Ferrari F550 Intrusion Sensor Fault
B2724 Toyota Pod Panel Dim Switch Circuit Open
B2724 Lexus Lf TCM Power Relay Sense Circuit Low