B2190 Diagnostic Trouble Code

B2190 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 B2190 diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
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.
Dirty air cleaner element Damaged DPF

Repair Processes :

Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. 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. 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 B2190 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 B2190.

Fortunately, B2190 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2190 Trouble Code For Specific Cars

B2190 Suzuki X2 Mirror Driver Vertical Feedback Potentiometer Circuit Short to Battery
B2190 Railton Straight 8 Fuel Temperature Sensor A Circuit low Input
B2190 Jensen Gt Seat Driver Recline Forward Switch Circuit Short To Ground
B2190 Chrysler 180 Engine Oil Pressure Sensor/Switch Low Voltage
B2190 Marcos 850 Transfer Case Contact Plate "D" Encoder Circuit Failure
B2190 Isuzu Frontera SCP (J1850) Invalid or Missing Data for Throttle
B2190 Allard P1 Air Bag Driver Circuit Short to Ground - Loop #2