Maserati U1009
87 LIN 2 Bus – Missing Message PSM U1009-87 LIN 2 Bus – Missing Message Important Notes • These DTCs are false positives. • They do not cause any noticeable issue for the customer
Quick answer
For applicable 2024–2025 Maserati Grancabrio vehicles in the US, U1009-87 indicates a LIN 2 Bus missing-message entry involving the PSM. Maserati’s official communication states this DTC is a false positive and does not cause a noticeable customer issue.
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1. What does U1009 mean?
For applicable 2024–2025 Maserati Grancabrio vehicles in the US, U1009-87 indicates a LIN 2 Bus missing-message entry involving the PSM. Maserati’s official communication states this DTC is a false positive and does not cause a noticeable customer issue.
2. Technical explanation
The verified manufacturer communication identifies U1009-87 as “LIN 2 Bus – Missing Message” for the PSM. The communication says LIN2-bus-related storage of this DTC may occur and specifically notes that these DTCs are false positives.
3. What system is affected?
LIN 2 bus communication / PSM, as identified in the verified manufacturer communication.
4. How serious is this code?
The supplied verified evidence describes this DTC as a false positive and states that it does not cause any noticeable issue for the customer. A severity classification is not otherwise established by verified evidence.
5. Symptoms you may notice
- No noticeable customer issue is expected according to the verified manufacturer communication.
6. Possible causes
- The verified communication states that LIN2 bus-related storage of U1009-87 may occur.
- A specific underlying root cause is not yet established by verified evidence.
7. Can I still drive the vehicle?
Not yet established by verified evidence.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Record the stored code and vehicle details.
- Consult a Maserati service center if diagnosis or confirmation is needed.
- Do not attempt high-voltage or vehicle-network repairs without qualified service procedures.
10. Step-by-step troubleshooting
- Verify whether the vehicle is a US-market 2024–2025 Maserati Grancabrio.
- Check for U1009-87 recorded as “LIN 2 Bus – Missing Message” involving the PSM.
- Refer to Maserati Technical Bulletin MAS004896 / NHTSA manufacturer communication MC-11024288-0001 for the applicable manufacturer guidance.
- Further diagnostic steps are not established by the supplied verified evidence.
11. When to contact service
Contact a Maserati service center for confirmation of applicability and manufacturer-directed handling if the code is present or if any concern is observed.
12. What the service center may check
- Confirm vehicle applicability: Maserati Grancabrio, model years 2024–2025, US region.
- Confirm the stored entry is U1009-87, “LIN 2 Bus – Missing Message,” involving the PSM.
- Review Maserati Technical Bulletin MAS004896.
13. Possible repair or resolution
- The supplied verified evidence does not provide a repair procedure or resolution.
- The manufacturer communication characterizes the DTC as a false positive that does not cause a noticeable customer issue.
14. Affected vehicles
- Maserati Grancabrio · 2024–2025 · US
15. Related TSBs / service bulletins
- Maserati Technical Bulletin MAS004896, published through NHTSA as Manufacturer Communication PDF 11024288 (MC-11024288-0001), dated 2025-10-01. It states that DSM and PSM U1009-87 LIN 2 Bus – Missing Message DTCs may be stored, are false positives, and do not cause a noticeable customer issue.
16. Recall information
- No recall information is established by the supplied verified evidence.
17. Official manufacturer information
Official source: NHTSA Manufacturer Communication PDF 11024288, Maserati MTB 25-36 / MAS004896: https://static.nhtsa.gov/odi/tsbs/2025/MC-11024288-0001.pdf
19. Frequently asked questions
What does Maserati U1009-87 mean?
For the applicable vehicle population, it is identified as “LIN 2 Bus – Missing Message” involving the PSM.
Does U1009-87 cause a noticeable problem?
The verified Maserati communication states that this DTC is a false positive and does not cause any noticeable issue for the customer.
Which vehicles are covered by the supplied evidence?
The supplied applicability evidence covers US-market 2024–2025 Maserati Grancabrio vehicles.
Is there a verified repair procedure?
No repair procedure is provided in the supplied verified evidence.