P273A Diagnostic Trouble Code

P273A 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 P273A diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Reduction in engine performance, especially at low RPM levels

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.
An air leak forward of the DPF will change the sensor readings resulting in the code

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. 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 P273A 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 P273A.

Fortunately, P273A is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P273A Trouble Code For Specific Cars

P273A Nissan Laurel Column Reach Feedback Potentiometer Circuit Open
P273A Renault Ellypse Gear shift position Fault
P273A Hyundai Veloster SCP (J1850) Invalid or Missing Data for Engine Oil Temp
P273A Riley Rm Hydraulic Fluid Pressure/ Flow Circuit Short to Gnd
P273A Mercedes Sl 350 Air Bag Crash Sensor #2 Feed/Return Circuit Failure
P273A Subaru Svx Longitudinal Acceleration Threshold Exceeded
P273A Mercedes-benz Clk Class Air Suspension Compressor Relay Circuit Failure