P1625 Audi Code - CAN Data Bus TCM Incorrect Signal
Quick Answer
P1625 Audi indicates CAN Data Bus TCM Incorrect Signal. Common causes include Transmission Control Module (TCM) incorrectly coded. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1625 Audi indicates CAN Data Bus TCM Incorrect Signal.
- Common causes
- Common causes include Transmission Control Module (TCM) incorrectly coded.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1625 Audi Description
What are the Possible Causes of the DTC P1625 Audi?
- Transmission Control Module (TCM) incorrectly coded
How to Fix the DTC P1625 Audi?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1625 Audi code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1625 Audi Code
1. What does the OBDII code P1625 mean on an Audi?
P1625 indicates a "CAN Data Bus TCM Incorrect Signal," meaning there is an issue with the communication between the Transmission Control Module (TCM) and other modules via the CAN bus network.
2. What are the common symptoms of the P1625 code in an Audi?
Symptoms may include erratic shifting, the transmission being stuck in limp mode, a check engine light, or communication errors with diagnostic tools.
3. What causes the P1625 code to appear?
Common causes include a faulty TCM, damaged CAN bus wiring, loose or corroded electrical connections, or software issues in the control modules.
4. Can I still drive my Audi with the P1625 code?
Driving with the P1625 code is not recommended as it may lead to poor transmission performance or further damage due to improper communication between modules.
5. How is the P1625 code diagnosed?
A technician will use a scan tool to check for other related codes, inspect the CAN bus wiring and connections, and test the TCM for proper operation.
6. What repairs are needed to fix the P1625 code?
Repairs may include replacing damaged wiring, cleaning or tightening electrical connections, updating software, or replacing a faulty TCM.
7. How much does it cost to fix a P1625 code on an Audi?
Repair costs vary widely depending on the issue but can range from $100 for simple wiring fixes to over $1,000 if the TCM needs replacement.
8. Can a weak battery cause the P1625 code to appear?
Yes, a weak or failing battery can cause voltage fluctuations that disrupt CAN bus communication, potentially triggering the P1625 code.
9. Is the P1625 code specific to Audi vehicles?
No, while it is common on Audi vehicles, the P1625 code can also appear on other makes using a similar CAN bus system.
10. Can clearing the P1625 code with a scan tool fix the issue?
Clearing the code may turn off the check engine light temporarily, but the underlying issue must be resolved to prevent the code from returning.
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