B3151 Diagnostic Trouble Code

B3151 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 B3151 diagnostic trouble code may include:

Vacuum leak on the engine
Reduction in engine performance, especially at low RPM levels
Engine surge
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 :

A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Faulty IMRC actuator/sensor
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code B3151 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 B3151.

Fortunately, B3151 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B3151 Trouble Code For Specific Cars

B3151 Nissan Note Control Module Programming Error
B3151 Peerless Sixteen Drivers Seat Belt Buckle Switch Circuit Short to Ground
B3151 Dacia Sandero Fuel Temperature Sensor B Circuit High Input
B3151 Excelsior Albert Injection Pump Fuel Metering Control "B" Range/Performance (Cam/Rotor/Injector)
B3151 Rover 2000 Idle Switch Circuit Malfunction
B3151 Ds Ds7 Crossback Ignition/Distributor Engine Speed Input Circuit Range/Performance
B3151 Abarth 1300 2-1 Downshift Error