P07B3 Diagnostic Trouble Code

P07B3 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 P07B3 diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
Diminished fuel efficiency

Possible Causes :

The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Defective ECU strategies or components will prevent proper regeneration
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

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. 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.

Process Tips

Diagnostic trouble code P07B3 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 P07B3.

Fortunately, P07B3 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P07B3 Trouble Code For Specific Cars

P07B3 Darracq 8 Heated Catalyst Temperature Below Threshold (Bank 1)
P07B3 Reliant Se6 Gate Select Position Circuit High
P07B3 Lamborghini Reventon SPCUT Solenoid Circuit Malfunction
P07B3 Bugatti Type 44 Cylinder 11 Injector Circuit High
P07B3 Fiat Twelve Left Front Sensor Circuit Short to Vbat
P07B3 Audi 200 All Door Lock Input Short to Ground
P07B3 Rambler Custom Fuel Trim Malfunction (Bank 1)