Audi DTC P1747 – Transmission Control Unit Relay Open/Short to Ground
DTC P1747 meaning on Audi
DTC P1747 in an Audi indicates a fault with the Transmission Control Unit (TCU) relay circuit. This fault is related to an open or short to ground in the TCU relay circuit, causing the TCU to lose communication with the transmission control module.
Audi DTC P1747 symptoms
Symptoms of DTC P1747 in an Audi may include erratic shifting behavior, transmission slipping, harsh shifting, or the transmission going into limp mode. The Check Engine Light may also be illuminated on the dashboard.
Audi DTC P1747 causes
The common causes of DTC P1747 in an Audi include a faulty TCU relay, damaged wiring in the relay circuit, or a poor connection at the relay. Corrosion or loose connections can also lead to this fault code.
Audi DTC P1747 seriousness
DTC P1747 should be addressed promptly as it can lead to drivability issues and potential damage to the transmission if left unresolved. Ignoring this fault code may result in further transmission problems and increased repair costs.
How to diagnose DTC P1747 on Audi
To diagnose DTC P1747 on an Audi, a mechanic would typically start by using a diagnostic scanner to retrieve the fault code and perform a visual inspection of the TCU relay and its wiring. They may test the relay for continuity and check for any signs of damage or corrosion. Additionally, a thorough inspection of the transmission control system may be necessary to identify any underlying issues.
How to fix DTC P1747 on Audi
Fixing DTC P1747 on an Audi usually involves replacing the faulty TCU relay and repairing any damaged wiring or connections in the relay circuit. The relay should be replaced with a genuine Audi part to ensure proper functionality. Once the repairs are completed, the fault code should be cleared, and the system should be retested to ensure the issue has been resolved.
How to erase DTC P1747 on Audi
To erase DTC P1747 on an Audi, a diagnostic scanner can be used to clear the fault code from the vehicle’s memory. After the repairs have been made and the issue has been resolved, the mechanic can reset the Check Engine Light and verify that the fault code does not return during a test drive.
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