P2703 Diagnostic Trouble Code

P2703 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 P2703 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
Poor acceleration

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio.

Process Tips

Diagnostic trouble code P2703 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 P2703.

Fortunately, P2703 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2703 Trouble Code For Specific Cars

P2703 Porsche Cayman Type 981 Fuel Pump Low Speed Malfunction
P2703 Chevrolet Equinox Drivers Seat Belt Buckle Switch Circuit Short to Ground
P2703 Saab Mc Ignition Tamper Circuit Short To Ground
P2703 Ferrari 735 Intake Valve Control Solenoid Circuit Low (Bank 2)
P2703 Simca 1300 Intake Manifold Runner Control (Stuck Closed)
P2703 Toyota Solara Parking Brake Switch Circuit Failure
P2703 Mercedes S 600 Air Bag Crash Sensor #1 Feed/Return Circuit Failure