U1794
Lack of Acknowledgment For Mirrors
U1794 is an OBD-II diagnostic trouble code meaning: Lack of Acknowledgment For Mirrors. Common causes: broken or damaged wiring to the mirror unit, malfunction of the mirror control unit. Estimated repair cost: $17–89.
Symptoms
- Mirror adjustment functions do not work
- Mirrors do not fold when the corresponding function is activated
- Malfunction indicator on the instrument panel
- Possible problems with memory of mirror positions
Causes
- Broken or damaged wiring to the mirror unit
- Malfunction of the mirror control unit
- Problems with connectors or contacts
- Problems with system power or grounding
- Control unit software failure
How to Fix
- Check the integrity of the wiring harness to the mirrors
- Check connections and connector contacts
- Check fuses associated with the mirror system
- Diagnose the mirror control unit
- If necessary, reflash or replace the control unit
FAQ
What does the U1794 code mean?
U1794 is an OBD-II diagnostic trouble code that indicates: Lack of Acknowledgment For Mirrors
What causes a U1794 error code?
The most common causes of U1794 include: Broken or damaged wiring to the mirror unit; Malfunction of the mirror control unit; Problems with connectors or contacts; Problems with system power or grounding.
How do I fix a U1794 diagnostic trouble code?
To fix U1794: Check the integrity of the wiring harness to the mirrors. Check connections and connector contacts. Check fuses associated with the mirror system. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1794?
Yes, but get it checked soon
How much does it cost to fix U1794?
The estimated repair cost for U1794 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat