P1348 Diagnostic Trouble Code

P1348 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 P1348 diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
Lack of power

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.
Some aftermarket accessories and performance modifications

Repair Processes :

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. 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.

Process Tips

Diagnostic trouble code P1348 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 P1348.

Fortunately, P1348 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1348 Trouble Code For Specific Cars

P1348 Cadillac V Disable Signal Open Circuit
P1348 Dodge Hemi Ignition Control (IC) Circuit Low Voltage
P1348 Bmw 7 Climate Control A/C Pressure Switch Circuit Failure
P1348 Monteverdi 400 Battery Power Relay Circuit Open
P1348 Subaru B11 LED #1 Circuit Short to Battery
P1348 Spectre R45 Lamp Brake Warning Output Circuit Short To Battery
P1348 Dixi S IAT Sensor Open/Short