B2158 Diagnostic Trouble Code

B2158 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 B2158 diagnostic trouble code may include:

Diminished fuel efficiency
Fuel pressure too high
Malfunction Indicator Lamp (MIL) illuminated
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
Faulty IMRC actuator/sensor

Repair Processes :

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. 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 B2158 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 B2158.

Fortunately, B2158 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2158 Trouble Code For Specific Cars

B2158 Ford Ka 2 Mirror Driver Right Circuit Short To Battery
B2158 Maserati 2.24v Transmission Automatic Hall Effect Sensor Power Circuit Failure
B2158 Datsun 100 Heated Windshield Relay Coil Circuit Failure
B2158 Suzuki Hayabusa Metering Oil Pump Temperature Sensor Circuit Malfunction
B2158 Fiat Ulysse Left Front Vertical Accelerometer Circuit Failure
B2158 Checker Aerobus Door Lock Cylinder Circuit Short To Ground
B2158 Oakland 6 Cylinder 2 Injector Circuit Low