P03BB Diagnostic Trouble Code

P03BB 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 P03BB diagnostic trouble code may include:

Fuel pressure too high
Diminished fuel efficiency
Rich or lean exhaust
Lack of power

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 relay (if equipped)

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. 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 P03BB 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 P03BB.

Fortunately, P03BB is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P03BB Trouble Code For Specific Cars

P03BB Healey Silverstone Passenger's Front Seat Up Switch Circuit Short to Battery
P03BB Bsa Scout Current Sense Circuit Failure
P03BB Allard M1 Air Bag Driver Circuit Short to Battery - Loop #2
P03BB Lancia Kappa Speed Wheel Sensor RR Coherency Fault
P03BB Mazda 3 Transmission Transfer Case Contact Plate 'B' Short Circuit To Ground
P03BB Nsu 1200 Cylinder 11 Contribution/balance Fault
P03BB Vauxhall Astra H Powertrain Performance Mode Switch Circuit failure