Hyundai C1700
MDPS COMPONENT REPLACEMENT INFORMATION TSB #: 20-ST-001H-1 Page 9 of 13 SUBJECT: SUBJECT: Torque Angle Sensor (TAS) Wiring Inspection In the presence of DTC C1259 (steering angle s
Quick answer
For applicable Hyundai vehicles, C1700 appears in Hyundai MDPS service information. The verified evidence places it in an R-MDPS Power-Pack-related DTC group, for which the published flowchart directs a connector/wiring check, DTC clearing and recheck, then Power Pack assembly replacement if the DTC remains.
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 C1700 mean?
For applicable Hyundai vehicles, C1700 appears in Hyundai MDPS service information. The verified evidence places it in an R-MDPS Power-Pack-related DTC group, for which the published flowchart directs a connector/wiring check, DTC clearing and recheck, then Power Pack assembly replacement if the DTC remains.
2. Technical explanation
MDPS refers to Hyundai’s motor-driven power steering system. NHTSA-hosted Hyundai service bulletin 22-ST-001H lists C1700 among R-MDPS Power-Pack-related DTCs. Its flowchart states: check R-MDPS connectors and wiring; erase the DTC(s) and re-check; if the DTC(s) are still present, replace the Power Pack assembly. A separate bulletin version states that, for TMa, C1688 occurring together with C1700 calls for Power Pack assembly replacement. The supplied evidence does not establish a standalone plain-language definition for C1700.
3. What system is affected?
Motor-Driven Power Steering (MDPS), specifically the R-MDPS Power Pack diagnostic group in the verified Hyundai bulletin.
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
- R-MDPS connector or wiring condition is included in the verified diagnostic flowchart.
- A persistent C1700 after connector/wiring checks and DTC clearing is handled by the verified flowchart with Power Pack assembly replacement.
- Not yet established by verified evidence: a component-level root cause specific to C1700.
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 by a Hyundai-qualified service facility.
- Provide the stored DTCs and note whether C1688 is also present.
- Do not perform Power Pack, steering-column, ECU, connector, or wiring repairs without appropriate service information and training.
10. Step-by-step troubleshooting
- A service facility can check R-MDPS connectors and wiring, as specified in Hyundai bulletin 22-ST-001H.
- The bulletin instructs technicians to erase DTC(s) and re-check after the connector/wiring check.
- If the DTC(s) remain present, the R-MDPS flowchart directs replacement of the Power Pack assembly.
11. When to contact service
Service evaluation is appropriate because the verified Hyundai flowchart includes R-MDPS connector/wiring inspection and possible Power Pack assembly replacement.
12. What the service center may check
- Check R-MDPS connectors and wiring.
- Erase DTC(s) and re-check.
- If DTC(s) remain, replace the Power Pack assembly according to the R-MDPS flowchart.
- For TMa, if C1688 occurs with C1700, replace the Power Pack assembly according to the cited bulletin version.
13. Possible repair or resolution
- The verified R-MDPS flowchart specifies Power Pack assembly replacement when the listed DTC(s), including C1700, remain after connector/wiring checks and DTC clearing/recheck.
- Not yet established by verified evidence: whether a repair is required in every individual C1700 case.
14. Affected vehicles
- Hyundai Kona · 2016–2021 · US
- Hyundai Kona · 2016–2020 · US
- Hyundai Sonata · 2016–2017 · US
- Hyundai Sonata · 2016–2021 · US
- Hyundai Sonata · 2016–2020 · US
15. Related TSBs / service bulletins
- Hyundai TSB 22-ST-001H, published through NHTSA on January 6, 2022: R-MDPS DTC repair flowchart lists C1700 in the Power-Pack-related group.
- Hyundai TSB 20-ST-001H-1, published through NHTSA on August 10, 2020: states that for TMa, C1688 with C1700 calls for Power Pack assembly replacement.
- Hyundai TSB 20-ST-001H-2, published through NHTSA on September 9, 2020: contains the same cited TMa C1688-with-C1700 instruction.
16. Recall information
No recall relationship is established by verified evidence.
17. Official manufacturer information
Verified official sources are NHTSA-hosted Hyundai manufacturer communications: 22-ST-001H (https://static.nhtsa.gov/odi/tsbs/2022/MC-10207815-0001.pdf), 20-ST-001H-1 (https://static.nhtsa.gov/odi/tsbs/2020/MC-10179244-0001.pdf), and 20-ST-001H-2 (https://static.nhtsa.gov/odi/tsbs/2020/MC-10180981-0001.pdf). Verified applicability records include US Hyundai Kona model years 2016–2021 and Sonata model years 2016–2021, with overlapping applicability entries present in the supplied data.
19. Frequently asked questions
What system is associated with C1700 in the verified Hyundai information?
The supplied Hyundai bulletin evidence associates C1700 with the R-MDPS Power-Pack-related diagnostic group.
What does the verified Hyundai flowchart say to do for C1700?
Check R-MDPS connectors and wiring, erase the DTC(s), and re-check. If the DTC(s) remain, replace the Power Pack assembly.
Is C1700 definitively a Power Pack failure?
Not yet established by verified evidence. The bulletin first directs connector and wiring checks, then specifies Power Pack assembly replacement if the DTC remains.
Can the vehicle be driven with C1700?
Not yet established by verified evidence.