B1622 Diagnostic Trouble Code

B1622 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 B1622 diagnostic trouble code may include:

Malfunction Indicator Lamp (MIL) illuminated
Carbon Buildup on O2 Sensor
Poor fuel economy
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.
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

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. 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. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code B1622 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 B1622.

Fortunately, B1622 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1622 Trouble Code For Specific Cars

B1622 Chevrolet Chevette Driver Power Window Up Circuit Short To Ground
B1622 Vauxhall Ventora Pressure Control Solenoid Failed Low
B1622 Nissan Phaeton Cooling Fan 2 Control Circuit Malfunction
B1622 Citroen Sm Fuel Pump Secondary Circuit Malfunction
B1622 Chenard Walcker 2-litre Door Unlock Disarm Output Circuit Short To Battery
B1622 Bmw Serie 5 Clutch Position Sensor Circuit Range/Performance Malfunction
B1622 Renault Sport Spider HO2S Heater Control C ircuit (Bank 1 Sensor 2)