P2728 Diagnostic Trouble Code

P2728 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 P2728 diagnostic trouble code may include:

Faulty PCM
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Poor acceleration
Hesitation upon 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.
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Look at the plug wires to make sure they are not burnt or laying on the exhaust. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble.

Process Tips

Diagnostic trouble code P2728 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 P2728.

Fortunately, P2728 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P2728 Trouble Code For Specific Cars

P2728 Daewoo Musson Gauge Driver Circuit Fault
P2728 Audi A6 ANTI THEFT HORN OUTPUT CIRCUIT Failure
P2728 Chevrolet Hhr Dual Alternator Upper Fault
P2728 Citroen Ds4 Fuel Level Sensor B Circuit Malfunction
P2728 Knox Model O Servo Motor Potentiometer Airintake Right Circuit Short To Battery
P2728 Ds Ds 3 Ignition Tamper Circuit Short To Ground
P2728 Maybach Ds8 Transmission System MIL Fault