P1904 DTC For Audi Q7
Audi Q7 Engine Specifications:
| Engine Type : | Single Cylinder Engine |
| Cylinder Type : | Opposite Piston Engine |
| Engine Air Intake Process : | Supercharged Engine |
Your Audi Q7 engine control system detects a problem, the computer stores the diagnostic trouble
code P1904 in its memory.
To figure out what is wrong with your vehicle you must first extract the P1904 DTC For Audi Q7.
Another consequence of P1904 Audi Q7 engine overheating may be a blown head gasket. Heat makes aluminum swell almost three times faster than cast iron. Thermal stress can distort the head and make it swell in areas that are hottest like those between exhaust valves in adjoining cylinders, and areas that have restricted coolant flow like the narrow area that separates the cylinders. The typical aluminum head swells most in the middle, which can crush the head gasket if the head gets too hot. This will usually cause the head gasket to leak compression between adjacent cylinders, or leak coolant into the cylinders.
P1904 Audi Q7 DTC Meaning
| P |
Powertrain Code - Problem is related engine, transmission and emissions systems. |
| 1 |
MFG - Manufacturer Specific |
| 9 |
Transmission |
| 0 |
Air Conditioning (A/C) Clutch Feedback Circuit High Voltage |
| 4 |
Cruise Vehicle Speed/Set Speed Difference Too High |
If your vehicle failed a P1904 Audi Q7 test and the P1904 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses P1904 a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look P1904 DTC For Audi Q7: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.
You can also check other Audi car models :
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The listed Audi models will give information about P1904 DTC.
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