P3097 Diagnostic Trouble Code

P3097 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 P3097 diagnostic trouble code may include:

Faulty or damaged wiring
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Poor fuel economy
Engine surge

Possible Causes :

Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

Repair Processes :

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. If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve.

Process Tips

Diagnostic trouble code P3097 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 P3097.

Fortunately, P3097 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P3097 Trouble Code For Specific Cars

P3097 Db Hbr HO2S Heater Control Circuit Low (Bank 2 Sensor 2)
P3097 Bugatti Type 50 Cylinder 12 Contribution/Balance Fault
P3097 Bentley 3-litre Battery Module Fault
P3097 Ac 2-litre A/C Relay Circuit Malfunction
P3097 Renault Primaquatre Heated Catalyst Temperature Below Threshold (Bank 2)
P3097 Honda N Iii PWM Input Circuit Failure
P3097 Alfa Romeo Rm Air Bag Crash Sensor #1 Ground Circuit Short To Ground