P07B2 Diagnostic Trouble Code

P07B2 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 P07B2 diagnostic trouble code may include:

Reduction in engine performance, especially at low RPM levels
Vacuum leak on the engine
Diminished fuel efficiency
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.
Dirty air cleaner element Damaged DPF

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. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed. 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.

Process Tips

Diagnostic trouble code P07B2 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 P07B2.

Fortunately, P07B2 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P07B2 Trouble Code For Specific Cars

P07B2 Volvo 850
P07B2 Holden Zafira Pressure Control Solenoid "C" Short Circuit
P07B2 Willys-overland Interlagos
P07B2 Mercedes 122f 16hp A/C Temperature Sensor Out of Range
P07B2 Porsche Cayman Type 987 Fuel Pump Monitor Circuit High Input
P07B2 Geely Maple O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2
P07B2 Ferrari F355 Intermediate Speed Sensor (ISS) Malfunction