P228B Diagnostic Trouble Code

P228B 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 P228B diagnostic trouble code may include:

Poor acceleration
Cherry red hot catalytic converter
Possible spark knock (detonation / pre-ignition)
Engine surge

Possible Causes :

Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

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. 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 P228B 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 P228B.

Fortunately, P228B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P228B Trouble Code For Specific Cars

P228B Nissan Terrano Cylinder #1 High To Low Side Short
P228B Lexus Rx400h TFT Sensor In Range Failure Low Value
P228B Zaz Slavuta
P228B Borgward 2400 Control Module VSS Output "B" Malfunction
P228B Lada 2105 Shift Solenoid A Electrical/1-2 Shift Solenoid Circuit Electrical
P228B Audi A2 Ambient Air Temperature Sensor Circuit Low
P228B Willys-overland Whippet SCP (J1850) Invalid or Missing Data for Seat Motion / Control