B2927 Diagnostic Trouble Code

B2927 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 B2927 diagnostic trouble code may include:

The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Faulty or damaged wiring
Hesitation upon acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

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.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed. 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. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code B2927 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 B2927.

Fortunately, B2927 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2927 Trouble Code For Specific Cars

B2927 Ghia 1500 Oil Change Reset Button Circuit Failure
B2927 Proton Persona Fuel Shutoff Valve Control Circuit/Open
B2927 Fiat Strada Left Front Center Sensor Circuit Failure
B2927 Humber Imperial Right Rear Sensor Circuit Failure
B2927 De Tomaso Mangusta Hydraulic Clutch Actuator Valve Circuit Failure
B2927 Bmw 318 Catalyst System Efficiency Below Threshold (Bank 2)
B2927 Toyota Porte Park / Neutral Switch Input Circuit