P189D Diagnostic Trouble Code

P189D 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 P189D diagnostic trouble code may include:

Carbon Buildup on O2 Sensor
Malfunction Indicator Lamp (MIL) illuminated
Hesitation upon acceleration
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.
Some aftermarket accessories and performance modifications

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

Process Tips

Diagnostic trouble code P189D 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 P189D.

Fortunately, P189D is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P189D Trouble Code For Specific Cars

P189D Ferrari 208 Injector High Side Short To GND Or VBATT - Bank 1
P189D Kleinschnittger F Servo Motor Potentiometer Airintake Right Circuit Open
P189D Jeep Station Wagon Seat Driver Recline Backward Circuit Short To Battery
P189D Singer 2-litre Internal Control Module ROM Error (Module Identification Defined by SAE J1979)
P189D Nissan Autech Climate Control Air Temperature Internal Sensor Motor Circuit Open
P189D Rolls-royce Silver Wraith Idle Air Control System At Adaptive Clip
P189D Volkswagen Corrado Reverse Mirror Output Circuit Short to Ground