B3112 Diagnostic Trouble Code

B3112 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 B3112 diagnostic trouble code may include:

Fuel pressure too low
Rich or lean exhaust
Diminished fuel efficiency
Malfunction Indicator Lamp (MIL) illuminated

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator/sensor

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.

Process Tips

Diagnostic trouble code B3112 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 B3112.

Fortunately, B3112 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B3112 Trouble Code For Specific Cars

B3112 Berkeley Bandit Booster Solenoid circuit Failure
B3112 Vauxhall Corsa D Pressure Control Solenoid "C" Open Circuit
B3112 Frazer Nash Fast Not in P or N During KOEO / KOER
B3112 Bristol 405 COURTESY LAMP OUTPUT Ckt Short to Battery
B3112 Ferrari Tipo Keyless Entry Circuit Short To Ground
B3112 Koenigsegg Ccr Servo Motor Potentiometer Coolair Circuit Open
B3112 Nazzaro 20 Cellular Phone Handset Not Present