P145B Diagnostic Trouble Code

P145B 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 P145B 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 :

If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. 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.

Process Tips

Diagnostic trouble code P145B 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 P145B.

Fortunately, P145B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P145B Trouble Code For Specific Cars

P145B Honda Elysion Pressure Transducer Redundant / Secondary Signal Faulted
P145B Adler 12 ABS Inlet Valve Coil RF Circuit Short To Ground
P145B Mazda 5 Transmission Transfer Case Contact Plate 'C' Short Circuit To Battery
P145B Puma Mini Fuel Temperature Sensor #2 Circuit Open
P145B Renault Avantime Gear Shift Foward Actuator Circuit Low
P145B Mahindra Scorpio Traction Control Valve RF Circuit Open
P145B Hyundai Veracruz SCP (J1850) Invalid or Missing Data for Engine RPM