P1184 Diagnostic Trouble Code

P1184 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 P1184 diagnostic trouble code may include:

Poor acceleration
Cherry red hot catalytic converter
Possible spark knock (detonation / pre-ignition)
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.
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

Repair Processes :

If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. 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 P1184 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 P1184.

Fortunately, P1184 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1184 Trouble Code For Specific Cars

P1184 Oldsmobile Ninety-eight Cylinder Head Temp Sensor Out Of Self Test Range
P1184 Marcos 1300 Trans Control Switch (O/D Cancel) Out of Self Test Range
P1184 Vauxhall Frontera Pressure Control Solenoid A Control Circuit High
P1184 Opel Omega Door Ajar RR Circuit Failure
P1184 Apollo Gt Air Suspension LF Height Sensor Circuit Short To Ground
P1184 Volvo 242
P1184 Edsel Corsair Inertia Switch Activated