C0148 Diagnostic Trouble Code

C0148 is a kind of OBD-II Diagnostic C-Chassis 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 C0148 diagnostic trouble code may include:

Vacuum leak on the engine
Reduction in engine performance, especially at low RPM levels
Engine surge
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.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. 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. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors.

Process Tips

Diagnostic trouble code C0148 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 C0148.

Fortunately, C0148 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C0148 Trouble Code For Specific Cars

C0148 Maserati Indy Transmission Fluid Pressure Sensor/Switch E Circuit
C0148 Mercedes-benz M Class Air Suspension Front Compressor Relay Circuit Open
C0148 Bmw 316 Catalyst System Efficiency Below Threshold (Bank 1)
C0148 Triumph Gloria Passenger's Seatback Autoglide Rearward Switch Circuit Short to Ground
C0148 Wartburg Sports
C0148 Honda Lagreat Purge flow Sensor Circuit Intermittent
C0148 Chrysler Prowler Excessive Clutch Slippage