Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Acura TLX BaseFACTORY OEM SERVICE PROCEDURE
Sh-AWD System - Diagnostics
- DTC Troubleshooting
- DTC C0051-62 (16-03)
- DTC C0051-96 (77-06)
- DTC C0061-62 (12-01), C0061-62 (12-02), C0061-62 (12-03)
- DTC C0061-96 (77-05)
- DTC C0062-62 (15-01), C0062-62 (15-02)
- DTC C0063-62 (33-02), C0063-62 (33-03)
- DTC C1841-11 (42-02)
- DTC C1841-13 (42-01)
- DTC C1841-27 (43-01)
- DTC C1843-12 (47-01)
- DTC C1843-14 (47-02)
- DTC C1843-62 (47-03), C1844-62 (48-03), C1859-72 (71-02), C1859-73 (71-01), C185A-72 (71-04), C185A-73 (71-03)
- DTC C1844-12 (48-01)
- DTC C1844-14 (48-02)
- DTC C1850-12 (44-12)
- DTC C1850-14 (44-50)
- DTC C1851-87 (41-35)
- DTC C1851-96 (77-35)
- DTC C1853-18 (52-04)
- DTC C1853-19 (52-03)
- DTC C1853-1A (53-02), C1853-1A (53-04)
- DTC C1853-1B (53-01), C1853-1B (53-03)
- DTC C1853-1E (52-07)
- DTC C1854-18 (56-04)
- DTC C1854-19 (56-03)
- DTC C1854-1A (57-02), C1854-1A (57-04)
- DTC C1854-1B (57-01), C1854-1B (57-03)
- DTC C1854-1E (56-07)
- DTC C1855-92 (63-01)
- DTC C1860-98 (76-01)
- DTC U0029-00 (41-17)
- DTC U0047-00 (41-18)
- DTC U0100-00 (41-01)
- DTC U0101-00 (41-04)
- DTC U0122-00 (41-02)
- DTC U0126-00 (41-06)
- DTC U0131-00 (41-09)
- DTC U0146-00 (41-15)
- DTC U0151-00 (41-08)
- DTC U0401-68 (77-01)
- DTC U0402-68 (77-04)
- DTC U0416-68 (77-02)
- DTC U0447-68 (77-15)
- DTC U3000-49 (78-xx)
- DTC U3000-51 (91-01)
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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