Mitsubishi C1752
40°F and above 212°F (see Group 35C > diagnostic trouble code chart > C1752 in the Service Manual) ** FCM current temperature could be checked in FCM/LDW/AHB > Data List > Item #2
Quick answer
C1752 is associated with an out-of-range Forward Collision Mitigation (FCM) module temperature: below -40°F or above 212°F. Mitsubishi states the system can automatically return to operation once temperature returns to range, while C1752 remains stored.
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 C1752 mean?
C1752 is associated with an out-of-range Forward Collision Mitigation (FCM) module temperature: below -40°F or above 212°F. Mitsubishi states the system can automatically return to operation once temperature returns to range, while C1752 remains stored.
2. Technical explanation
Verified Mitsubishi/NHTSA communication evidence identifies C1752 as an FCM temperature-related DTC. The cited communication states that an out-of-range FCM temperature is below -40°F or above 212°F. It also states that current FCM temperature can be checked through FCM/LDW/AHB Data List, Item #2 (ECU temperature).
3. What system is affected?
Forward Collision Mitigation (FCM) module. The supplied evidence also references the FCM/LDW/AHB diagnostic data list.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- The FCM system may be temporarily non-operational while FCM temperature is out of range.
- When temperature returns to range, the system can automatically return to operation.
- C1752 can remain stored in the FCM module after the system returns to operation.
6. Possible causes
- The verified condition for C1752 is FCM temperature below -40°F or above 212°F.
- Further root causes are 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
- If the system becomes operational after the FCM temperature returns to range, Mitsubishi states there is no need to replace the FCM module solely for C1752.
- Have the stored DTC and FCM temperature data evaluated if needed by qualified service personnel.
10. Step-by-step troubleshooting
- Check FCM/LDW/AHB Data List, Item #2, identified as ECU temperature in the supplied manufacturer communication.
- Determine whether the reported FCM temperature is below -40°F or above 212°F.
- Confirm whether the system returns to operation after temperature returns to range.
- Do not replace the FCM module for C1752 when the system is operational with temperature in range, per the supplied Mitsubishi communication.
11. When to contact service
Service need is not yet established by verified evidence. Seek Mitsubishi service support if the FCM system does not return to operation when temperature is in range or if diagnosis is required.
12. What the service center may check
- Retrieve C1752 from the FCM module.
- Review FCM/LDW/AHB Data List Item #2 (ECU temperature).
- Assess whether the temperature is outside the stated range of below -40°F or above 212°F.
- Verify whether FCM operation returns when temperature is within range.
13. Possible repair or resolution
- Mitsubishi's supplied communication states that FCM module replacement is not needed for C1752 when the system is operational with temperature in range.
- Any further repair resolution is not yet established by verified evidence.
14. Affected vehicles
- Mitsubishi Outlander · 2012–2020 · US
- Mitsubishi i-MiEV · 2012–2020 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication PDF 10169006, TT253, published November 26, 2019. The supplied excerpt states that C1752 may remain stored after the system automatically returns to operation and that FCM module replacement is unnecessary if the system operates when temperature is in range.
16. Recall information
- No recall information was supplied or established by verified evidence.
17. Official manufacturer information
Official source supplied: NHTSA Manufacturer Communication PDF 10169006 (Mitsubishi TT253), https://static.nhtsa.gov/odi/tsbs/2019/MC-10169006-9999.pdf
- NHTSA: NHTSA Manufacturer Communication PDF 10169006: TT253 · official_tsb
19. Frequently asked questions
What does Mitsubishi C1752 mean?
The supplied manufacturer communication associates C1752 with an FCM temperature below -40°F or above 212°F.
Will C1752 clear when the temperature returns to normal?
The evidence states that the system can automatically return to operation when temperature returns to range, but C1752 remains stored in the FCM module.
Should the FCM module be replaced for C1752?
Mitsubishi states there is no need to replace the FCM module for C1752 if the system is operational when temperature is in range.
How is FCM temperature checked?
The supplied communication says to check FCM/LDW/AHB Data List, Item #2, identified as ECU temperature.