AI DamageC1604 code in owner complaints
Code C1604 is named in 8 US owner complaints. Models: 5, model years 2009–2020.
There is little data for this code or its meaning is ambiguous, so this page is not indexed.
What the code means
This is a manufacturer-specific code: the meaning depends on the make and sometimes on the year.
How to read C1604: the letter C means chassis (brakes, ABS, steering, suspension); the second digit 1 marks a manufacturer code whose meaning is set by the make; the last three characters 604 identify the specific fault.
Electric power steering, steering angle sensor and steering column codes. After a front wheel impact the steering angle sensor often needs calibration, and a bent rack or tie rod produces errors scanners describe as invalid data.
Key figures
- Complaints with this code
- 8
- Models
- 5
- Model years
- 2009–2020
Which models and years
Models whose owners name this code (5). Years link to the model year problems page.
Components named together with the code
Component as the owner filed it (one complaint can list several).
Complaints by model year
What to do if an auction car has this code
- Compare steering wheel and wheel positions in photos: an off-center wheel with straight tires points to a bent tie rod or rack.
- After front suspension repair, budget steering angle sensor calibration and an alignment.
What owners report
Excerpts of owner complaints in the original wording. Owner statements not verified by the regulator; personal data removed.
Power steering assist is completely unavailable. The EPS warning lamp is illuminated and the EPS module reports DTC C1604. The vehicle and EPS system remain at [XXX] Hyundai in [XXX] and are available for inspection upon request.
The car was inspected by the dealership, from which it was purchased, on June 29, 2026. The technician report says error codes C1604 and C1606 were found and that the car required replacement of the front camera system at the cost of $1991.49.
The car can be driven again. I brought to independent mechanic and found the code C1604 and thereâs a recall 251 on ABS brake system- recommended to bring to dealer. Brought to dealer, they say that recall 251 had no fix yet. They diagnosed that the safety plug relay needs to be replaced.
Related codes
Sources: public official US data (owner complaints) and the SAE J2012 standard. Complaints are owner statements not verified by the regulator. A code from a complaint does not replace a scan tool diagnosis. Data updated 2026-11-10.