B1923 Diagnostic Trouble Code

B1923 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 B1923 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.
Engine surge

Possible Causes :

Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
An air leak forward of the DPF will change the sensor readings resulting in the code
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code B1923 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 B1923.

Fortunately, B1923 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1923 Trouble Code For Specific Cars

B1923 Volkswagen Passat B7 Right Rear Turn Lamp Circuit Short to Battery
B1923 Mazda Laputa Turbo Charger Bypass Valve Control Circuit
B1923 Peugeot 203 ECM/TCM Serial Communication Error
B1923 Fiat Ecobasic Lamp Park Input Circuit Short To Ground
B1923 Cadillac Coupe Decklid Ajar Rear Door Circuit Short To Battery
B1923 Holden Lj Power Steering Pressure Sensor Circuit Malfunction
B1923 Maserati Karif Transmission Fluid Pressure Sensor/Switch E Circuit High