U0509
Invalid Data Received From Seat Control Module A
U0509 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Seat Control Module A. Common causes: seat control module a malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Seat adjustment functions do not work
- Check Engine or SRS light is on
- The seat does not remember the position
- Intermittent operation of heated seats
- Errors in other comfort systems
Causes
- Seat control module A malfunction
- Open or short circuit in wiring harness
- Poor contact in connectors under the seat
- Module power problems
- Software error in the control unit
How to Fix
- Check the integrity of the wiring harness under the seat
- Inspect and clean the connector contacts
- Check the power and ground of the control module
- Scan the seat module for errors
- Replace the seat control module if necessary
- Repair only from an authorized dealer
Related codes
Error U0509 by Vehicle Brand
FAQ
What does the U0509 code mean?
U0509 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Seat Control Module A
What causes a U0509 error code?
The most common causes of U0509 include: Seat control module A malfunction; Open or short circuit in wiring harness; Poor contact in connectors under the seat; Module power problems.
How do I fix a U0509 diagnostic trouble code?
To fix U0509: Check the integrity of the wiring harness under the seat. Inspect and clean the connector contacts. Check the power and ground of the control module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0509?
Yes, but get it checked soon
How much does it cost to fix U0509?
The estimated repair cost for U0509 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat