B3220 Diagnostic Trouble Code

B3220 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 B3220 diagnostic trouble code may include:

Excessive exhaust leak
Hesitation upon acceleration
Malfunction Indicator Lamp (MIL) illuminated
Reduction in engine performance, especially at low RPM levels

Possible Causes :

A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
Some aftermarket accessories and performance modifications
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code B3220 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 B3220.

Fortunately, B3220 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B3220 Trouble Code For Specific Cars

B3220 Ferrari 342 Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage
B3220 Chevrolet Lumina ECU Is Defective
B3220 Bristol 450 Crankshaft Position Sensor A Circuit High Input
B3220 Pininfarina Spider Evaporative Check Solenoid Circuit Malfunction
B3220 Gaz 30 O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)
B3220 Fiat 1100 Kickdown Pull Relay Open or Short Circuit to Ground
B3220 Skoda Octavia Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)