P1B0C Diagnostic Trouble Code

P1B0C is a kind of OBD-II Diagnostic P-Powertrain 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 P1B0C diagnostic trouble code may include:

Fuel pressure too high
Diminished fuel efficiency
Rich or lean exhaust
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
Faulty IMRC actuator relay (if equipped)

Repair Processes :

If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code P1B0C 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 P1B0C.

Fortunately, P1B0C is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1B0C Trouble Code For Specific Cars

P1B0C Mazda Rx8 A Camshaft Position Actuator Circuit (Bank 2)
P1B0C Lotec C1000 Torque Converter Clutch Circuit Intermittent
P1B0C Honda Step RESCU/VEMS Input Circuit Short to Ground
P1B0C Lincoln Zephyr Throttle/pedal Position Sensor/Switch B Circuit Range/Performance Problem
P1B0C Mercedes-benz Gl Class Air Suspension Disable Switch Circuit Short To Ground
P1B0C Marcos Ts Transmission 4-Wheel Drive High Indicator Short Circuit To Ground
P1B0C Opel Astra Data Mismatch #2 (receive data does not match what was expected)