P07A4 Diagnostic Trouble Code

P07A4 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 P07A4 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.
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.

Process Tips

Diagnostic trouble code P07A4 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 P07A4.

Fortunately, P07A4 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P07A4 Trouble Code For Specific Cars

P07A4 Rover 60 Ignition Coil C Primary Circuit Malfunction
P07A4 Renault Trafic HO2S Heater Control Circuit High (Bank 1 Sensor 2)
P07A4 Buick Wildcat Damper LF Circuit Short to Ground
P07A4 Abarth 210 4-5 Shift Malfunction
P07A4 Dort Roadster Ignition Tamper Circuit Short To Battery
P07A4 Bristol 450 Crankshaft Position Sensor A Circuit High Input
P07A4 Talbot Tagora Mirror Passenger Right Circuit Short To Ground