B143E Diagnostic Trouble Code

B143E 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 B143E diagnostic trouble code may include:

Carbon Buildup on O2 Sensor
Malfunction Indicator Lamp (MIL) illuminated
Hesitation upon acceleration
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
Some aftermarket accessories and performance modifications

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code B143E 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 B143E.

Fortunately, B143E is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B143E Trouble Code For Specific Cars

B143E Bmw 520i Chime Input Request Circuit Open
B143E Dodge Coronet Ignition Coil G Primary/Secondary Circuit Malfunction
B143E Toyota Sa Park Switch Indicates Park with Vehicle Moving
B143E Hyundai Ix35 SCP (J1850) Invalid or Missing Data for Chassis Status Request
B143E Knox Model O Servo Motor Potentiometer Airintake Right Circuit Short To Battery
B143E Mercedes-benz Slr Class Air Suspension Front Inflator Solenoid Output Circuit Short To Ground
B143E Volkswagen Crossgolf RF CORNER LAMP OUTPUT Ckt Short to Battery