B0023 Diagnostic Trouble Code

B0023 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 B0023 diagnostic trouble code may include:

Cherry red hot catalytic converter
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Reduction in engine performance, especially at low RPM levels

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 :

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. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code B0023 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 B0023.

Fortunately, B0023 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B0023 Trouble Code For Specific Cars

B0023 Dodge Conquest Ignition Coil D Secondary Circuit Malfunction
B0023 Bentley S1 Battery Voltage Circuit Malfunction
B0023 Adler 12 ABS Inlet Valve Coil RF Circuit Short To Ground
B0023 Db 850 HO2S Heater Control Circuit Low (Bank 1 Sensor 3)
B0023 Renault 18 Gear 3 Incorrect ratio
B0023 Toyota Blade O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
B0023 Volkswagen Type 4 SCP (J1850) Invalid or Missing Data for Brakes