Q7 emission control warning light on - 2006 Audi Q7

ossible causes
- Faulty Evaporative Emission (EVAP) Purge Solenoid Control
- Evaporative Emission (EVAP) Purge Solenoid Control harness is open or shorted
- Evaporative Emission (EVAP) Purge Solenoid Control circuit poor electrical connection
What does this mean?
When is the code detected?
An improper voltage signal is sent to Engine Control Module (ECM) through the valve.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0443 Description
The Evaporative Emission System (EVAP) canister purge volume control solenoid valve uses a ON/OFF duty to control the flow rate of fuel vapor from the EVAP canister. The EVAP canister purge volume control solenoid valve is moved by ON/OFF pulses from the Engine Control Module (ECM). The longer the ON pulse, the greater the amount of fuel vapor that will flow through the valve.

You must have the system computer scanned for the fault code or codes that are stored when the powertrain control module turns the light on. The with the fault known you perfrom the listyed diagnostics to cure the issue.

P0453 means EVAP emission pressure sensor high input. Possible causes:
- Faulty Evaporative Emission System (EVAP) Pressure sensor
- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
- Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection.
Code p0701 means Transmission control system range/performance. Possible causes:
- Open or short transmission control system circuit
- Poor transmission control system electrical connection
- Check powers and grounds to Transmission Control Module (TCM)

The warning light is telling the driver there is a problem with the performance or emissions that needs to be repaired.

My Audi Q7 has an V8 Fsi Engine and the check engine light is turned on ince years. But I cannot pass inspections, so year after year I am hvg those problems. Audi cannot find the problem! Better no more Audi!!!!

you need to replace the pad wear sensor when the pad wears down it wears the sensor and the sensor needs to be replace if you look at the sensor you can see the wire on the sensor wears threw

This is the Check Engine warning light (the light is required by law to be amber/yellow, it means that a problem or problems have been detected in the electronic engine control or the emission control system. this control system is called the OBD2 Electronic engine/emission control system. This system has over 200 possible faults that turn this warning light on, what needs to be done is to have the system scanned to see what fault codes are in the memory of the computer (called the PCM), it can be as easy as a defective or loose gas cap on up to Oxygen sensors failing, it is a long list, so the system scan is the very 1st thing that must be done to start the diagnosis.

A vehicle's Emission Control Light is a generalized indicator that there is fault or possible malfunction in the vehicle's operating system. In some cases, these warning lights will come on if a gas cap is not fully closed. It could any one of a number of sensors such as the o2 sensor or map sensor. The thing to do is have a reputable mechanic/technician run a diagnostics test on the vehicle.

This sounds like a speed sensor issue and you nmeed the correct code and i will help you i promise to resolve this issue for free

Will be related to engine management in some way, it will need to be checked out by a specialist, might need the particulate filter regenerating££££