Hyundai U113508
High Pressure EOP (HP EOP): Refer to the related shop manual to diagnose the DTC. If no wiring harness issues are found, replace the DCT. Model DTC Description 2022~ 2022~ 2022~ 20
Quick answer
U113508 is a Hyundai DTC for a CAN communication error between the transmission control unit (TCU) and the high-pressure electric oil pump (HF EOP/HP EOP). Verified Hyundai service information says to diagnose it using the related shop manual; if no wiring-harness issue is found, replace the dual-clutch transmission (DCT).
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does U113508 mean?
U113508 is a Hyundai DTC for a CAN communication error between the transmission control unit (TCU) and the high-pressure electric oil pump (HF EOP/HP EOP). Verified Hyundai service information says to diagnose it using the related shop manual; if no wiring-harness issue is found, replace the dual-clutch transmission (DCT).
2. Technical explanation
The verified manufacturer communication identifies U113508 as: “CAN communication error between the TCU and HF EOP.” The HF EOP is identified in the same source as the High Pressure EOP (HP EOP). The documented diagnostic direction is to refer to the related shop manual and, if no wiring-harness issues are found, replace the DCT.
3. What system is affected?
Transmission-control and high-pressure electric oil-pump communication network (TCU-to-HF EOP CAN communication).
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
Not yet established by verified evidence.
6. Possible causes
- CAN communication error between the TCU and HF EOP.
- Wiring-harness issues are specifically referenced in the verified service direction.
- If no wiring-harness issues are found, the verified service direction calls for DCT replacement.
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
- Arrange diagnosis using the related Hyundai shop manual.
- Have a qualified service facility inspect for wiring-harness issues before a DCT replacement decision.
10. Step-by-step troubleshooting
- Confirm DTC U113508 with a suitable diagnostic scan tool.
- Follow the related shop manual diagnostic procedure for the High Pressure EOP.
- Inspect for wiring-harness issues as directed by the manufacturer communication.
- If no wiring-harness issues are found, the manufacturer communication directs replacement of the DCT.
11. When to contact service
Service is appropriate because the verified manufacturer direction requires shop-manual diagnosis and may lead to DCT replacement if no wiring-harness issue is found.
12. What the service center may check
- Retrieve and confirm U113508.
- Diagnose the TCU-to-HF EOP CAN communication fault using the related shop manual.
- Check for wiring-harness issues.
- Replace the DCT if no wiring-harness issues are found, as specified in the verified communication.
13. Possible repair or resolution
- Repair any verified wiring-harness issue found during diagnosis.
- If no wiring-harness issue is found, replace the DCT per the verified Hyundai service direction.
14. Affected vehicles
- Hyundai Kona · 2022 · US
- Hyundai Santa Fe · 2022 · US
15. Related TSBs / service bulletins
- Hyundai/NHTSA Manufacturer Communication 22-AT-009H, published July 14, 2022 (NHTSA document MC-10217250-0001). It lists U113508 as a CAN communication error between the TCU and HF EOP and provides the stated shop-manual and DCT-replacement direction.
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
Official source: NHTSA-hosted Hyundai manufacturer communication 22-AT-009H: https://static.nhtsa.gov/odi/tsbs/2022/MC-10217250-0001.pdf
19. Frequently asked questions
What does Hyundai code U113508 mean?
Verified Hyundai service information identifies it as a CAN communication error between the TCU and HF EOP.
What is Hyundai’s documented repair direction for U113508?
Refer to the related shop manual to diagnose the DTC. If no wiring-harness issues are found, replace the DCT.
Is this verified for every Hyundai model?
No. The supplied applicability evidence establishes 2022 Hyundai Kona and 2022 Hyundai Santa Fe in the US. Broader applicability is not yet established by verified evidence.