P3004 Diagnostic Trouble Code

P3004 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 P3004 diagnostic trouble code may include:

Reduction in engine performance, especially at low RPM levels
Vacuum leak on the engine
Diminished fuel efficiency
Engine surge

Possible Causes :

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

Repair Processes :

If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition. If the scan tool has that capability, and the scan tool can operate the IMRC valves, then the problem is either resolved and a simple code clearing is all that's left or a new PCM would be called for. Look for damage to the tank indicating impact that may have damaged the fuel pump or sender.

Process Tips

Diagnostic trouble code P3004 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 P3004.

Fortunately, P3004 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P3004 Trouble Code For Specific Cars

P3004 Morris Six Calibration Resistor Out Of Range
P3004 Volkswagen Crafter Reverse Output Circuit
P3004 Chevrolet Hhr Dual Alternator Upper Fault
P3004 Audi C Anti Theft Input Signal Circuit Short To Battery
P3004 Fiat Abarth LAMP DOME OUTPUT Circuit Short to Battery
P3004 Austin Montego Aux A/C Blower Speed 1 Circuit Short to Ground
P3004 Audi A1 Ambient Air Temperature Sensor Circuit Intermittent