B2964 Diagnostic Trouble Code

B2964 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 B2964 diagnostic trouble code may include:

Faulty or damaged wiring
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
Poor fuel economy
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.
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

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. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground.

Process Tips

Diagnostic trouble code B2964 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 B2964.

Fortunately, B2964 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2964 Trouble Code For Specific Cars

B2964 Napier 90 Can Link ECM/ABSCM Circuit / Network Malfunction
B2964 Spyker C12 Lamp Dome Input Circuit Open
B2964 Facel Vega Excellence Injection Timing Control Circuit Malfunction
B2964 Citroen Nemo Fuel Pump Primary Circuit Malfunction
B2964 Packard Cavalier Drive Switch Input Circuit Low
B2964 Mercer 22 Air Suspension LF Corner Up Timeout
B2964 Volkswagen Microbus Right Rear Center Sensor Circuit Fault