P1858 Audi 4000 DTC Code

Audi 4000 Engine Specifications:

Engine Type :	Single Cylinder Engine
Cylinder Type :	V-Type Engine
Engine Air Intake Process :	Turbocharged Engine

Your Audi 4000 engine control system detects a problem, the computer stores the diagnostic trouble code P1858 in its memory. To figure out what is wrong with your vehicle you must first extract the P1858 DTC For Audi 4000.

Another consequence of P1858 Audi 4000 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.

P1858 Audi 4000 DTC Meaning

P	Powertrain Code - Problem is related engine, transmission and emissions systems.
1	MFG - Manufacturer Specific
8	Accelerator Pedal Position (APP) Sensor 1 Performance
5	BBV Sensor Circuit Low Voltage
8	Park/Neutral Postion (PNP) Switch Circuit Engine Torque Signal Circuit

The rule of P1858 Audi 4000 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of P1858. Likewise, overriding the OBD P1858 DTC For Audi 4000 system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.