B0075 Diagnostic Trouble Code

B0075 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 B0075 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.
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

Possible Causes :

Defective ECU strategies or components will prevent proper regeneration
The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

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 for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors.

Process Tips

Diagnostic trouble code B0075 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 B0075.

Fortunately, B0075 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B0075 Trouble Code For Specific Cars

B0075 Volvo S80
B0075 Frazer Six NVM RF HR Failure
B0075 Swallow Doretti Mk Mirror Driver/Passenger Switch Circuit Failure
B0075 Volkswagen Karmann Cheetah Right Front Wheel Pressure Reduction Performance Problem
B0075 Chrysler Newport Evaporative Emission Control System Vent Control Circuit Shorted
B0075 Td Cars Td2000 Misfire Detected - Rough Road Data Not Available
B0075 Ferrari 550 Intake Manifold Runner Control (Stuck Open)