P236B Diagnostic Trouble Code

P236B 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 P236B diagnostic trouble code may include:

Corroded or damaged connector
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Lack of power
Engine surge

Possible Causes :

Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
An air leak forward of the DPF will change the sensor readings resulting in the code
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

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. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code P236B 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 P236B.

Fortunately, P236B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P236B Trouble Code For Specific Cars

P236B Toyota Corona O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P236B Ferrari 256 Input/Turbine Speed Sensor Circuit No Signal
P236B Talbot Minx Mirror Passenger Horizontal Switch Circuit Short To Ground
P236B Mercedes E 180 ABS Outlet Valve Coil RR Circuit Short To Ground
P236B Fiat 2300 Lamp ABS Warning Output Circuit Failure
P236B Steyr 220 Lamp Seat Belt Circuit Open
P236B Ginetta G3 Open Power To Ground VCRM