P053B Diagnostic Trouble Code

P053B 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 P053B diagnostic trouble code may include:

Possible spark knock (detonation / pre-ignition)
Poor fuel economy
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Reduction in engine performance, especially at low RPM levels

Possible Causes :

Dirty air cleaner element Damaged DPF
A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Look at the plug wires to make sure they are not burnt or laying on the exhaust. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code P053B 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 P053B.

Fortunately, P053B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P053B Trouble Code For Specific Cars

P053B Dodge Colt Ignition Coil D Primary/Secondary Circuit Malfunction
P053B Maserati Quatroporte Transmission Fluid Temperature Sensor Circuit High Input
P053B Bmw 325 Central Lock Motor Failure
P053B Packard Mayfair Driver Door Ajar Circuit Short To Ground
P053B Marcos 1300 Trans Control Switch (O/D Cancel) Out of Self Test Range
P053B Pierce-arrow Series Engine Overboost Condition
P053B Mercury Cyclone Air Suspension LR Air Spring/Shock Solenoid Output Circuit Short To Battery