P0112 Diagnostic Trouble Code

P0112 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 P0112 diagnostic trouble code may include:

Diminished fuel efficiency
Fuel pressure too high
Malfunction Indicator Lamp (MIL) illuminated
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Faulty IMRC actuator/sensor

Repair Processes :

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. Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications.

Process Tips

Diagnostic trouble code P0112 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 P0112.

Fortunately, P0112 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P0112 Trouble Code For Specific Cars

P0112 Ford Quadricycle Mirror Passenger Horizontal Switch Circuit Open
P0112 Mercedes-benz 770 Air Bypass System
P0112 Geely Bo O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
P0112 Renault Fregate Glow Plug Circuit High Input (Bank #1)
P0112 Gaz 24-10 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
P0112 Delahaye Gfa Hydraulic Pressure Sensor Range/Performance
P0112 Volkswagen Derby RF LAMP LOW BEAM CIRCUIT Failure