| Brand | Model | Year | Transmission | Drive | Engine |
|---|---|---|---|---|---|
| Audi | A4 | 2000-2008 | CVT (01J/VL300) | FWD | 1.8T / 2.0L / 2.4L / 3.0L |
| Audi | A4 | 2008-2011 | CVT (01J/VL381) | FWD | 1.8T / 2.0T / 2.4L |
| Audi | A6 | 2000-2005 | CVT (01J/V30) | FWD | 1.8T / 2.4L / 2.8L / 3.0L |
| Audi | A6 | 2005-2011 | CVT (01J/VL300) | FWD | 2.0T / 2.4L / 2.8L / 3.0T |
| Audi | A8 | 2000-2005 | CVT (01J) | FWD | 3.7L / 4.2L |
| Audi | A5 | 2007-2011 | CVT (0AW) | FWD | 1.8T / 2.0T |
| Audi | Q5 | 2008-2012 | CVT (0AW) | FWD | 2.0T |
| Audi | A4 Allroad | 2009-2011 | CVT (0AW) | FWD | 2.0T |
| Volkswagen | Passat | 2000-2005 | CVT (01J) | FWD | 1.8T / 2.8L |
| Volkswagen | Phaeton | 2002-2006 | CVT (01J) | FWD | 3.2L / 4.2L |
What are typical symptoms of a faulty 01J TCU?
Typical symptoms include flashing gear display on dashboard, transmission warning light, no reverse gear (unable to engage R), vehicle no-start, starting judder or power interruption during driving. Diagnostic tools may show P0705 (multifunction switch F125 fault), P0715 (input speed sensor fault), P1741 (clutch pressure adaptation limit reached) or P0603 (TCU internal fault) codes. These issues are usually caused by TCU internal circuit board soldering cracks, sensor signal abnormalities or fluid leaking into the circuit board.
![]()
![]()
![]()
![]()
![]()
![]()
Q1. Are you a factory or a trading company?
We are an integrated manufacturing and trading supplier with 22 years of experience in the automotive transmission industry.
Q2. How can we buy suitable transmission parts?
We can provide you with suitable transmission parts based on your transmission model and VIN frame number.
Q3. Do you offer sample services?
Yes, we are happy for you to choose our products to test the product quality and service. However, the express delivery fee shall be borne by you. If you are satisfied with our samples and place an order, we will deduct the sample fee you paid from your order.
Q4. Does your company provide customization services?
Yes. We can customize product labels and packaging according to your requirements.
Q5. What is your delivery date?
Under normal circumstances, the delivery date is about 5-15 working days after receiving payment.
Q6. What about your after-sales service?
All our products have a one-year warranty period, and we can provide spare parts needed for after-sales service.
Q7. Can I visit your factory?
Of course, you are welcome at any time. We can also arrange pickup services from the airport or railway station.