P1043 Diagnostic Trouble Code

P1043 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 P1043 diagnostic trouble code may include:

Blown fuse (if applicable)
Engine surge
Reduction in engine performance, especially at low RPM levels
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Dirty air cleaner element Damaged DPF

Repair Processes :

It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground.

Process Tips

Diagnostic trouble code P1043 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 P1043.

Fortunately, P1043 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1043 Trouble Code For Specific Cars

P1043 Datsun 260 High Vehicle Speed Observed in Park
P1043 Great Wall Wingle Passenger Seat Rearward Switch Circuit Short to Battery
P1043 Peugeot Rifter Engine Oil Pressure Sensor/Switch Circuit Malfunction
P1043 Toyota Rsc Park Lamp Flash Relay Circuit Short to Battery
P1043 Delage Delage Hydraulic Oil Temperature Sensor Circuit Low Input
P1043 Ford Ranchero Mirror Passenger Left Circuit Failure
P1043 Stanley 20 Hp Lamp Park Input Circuit Failure