P1103 Diagnostic Trouble Code

P1103 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 P1103 diagnostic trouble code may include:

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

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
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. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for.

Process Tips

Diagnostic trouble code P1103 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 P1103.

Fortunately, P1103 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1103 Trouble Code For Specific Cars

P1103 Acura Rl ABS Inlet Valve Coil LF Circuit Short To Ground
P1103 Ds Ds 4 Ignition/Distributor Engine Speed Input Circuit Intermittent
P1103 Bertone Stratos Brake Pedal Input Circuit Failure
P1103 Gaz 25 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
P1103 Nissan Rogue Crankshaft Position Sensor B Circuit Intermittent
P1103 Buick Terraza Damper LF Circuit Open
P1103 Mercury Zephyr Air Suspension RF Air Spring Solenoid Output Circuit Open