B0348 Diagnostic Trouble Code

B0348 is a kind of OBD-II Diagnostic B-Body 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 B0348 diagnostic trouble code may include:

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
Faulty or damaged wiring
Hesitation upon acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.

Process Tips

Diagnostic trouble code B0348 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 B0348.

Fortunately, B0348 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B0348 Trouble Code For Specific Cars

B0348 Abarth Mono A/C Cycling Period Too Short
B0348 Volkswagen Gx3 Ride Control RR Shock Actuator Circuit Short To Ground
B0348 Jaguar Xf Seat Driver Front Up Circuit Open
B0348 Riley Pathfinder Hydraulic Clutch Actuator Valve Signal Fault
B0348 Jaguar Xjr Seat Driver Occupied Input Circuit Short To Battery
B0348 Ferrari 246 Input shaft speed signal missing/faulted
B0348 Dodge Hemi Ignition Control (IC) Circuit Low Voltage