C1A04
0 owner reports and 95 manufacturer filings across 32 model years from Ford, Infiniti, Nissan.
Where C1A04 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2017 Infiniti Q50 | Equipment | 6 | — | |
| 2018 Infiniti Q70 | Equipment | 6 | — | |
| 2017 Infiniti Q70 | Equipment | 6 | — | |
| 2018 Infiniti QX60 | Equipment | 6 | — | |
| 2017 Infiniti QX60 | Equipment | 6 | — | |
| 2018 Infiniti Q50 | Equipment | 4 | — | |
| 2018 Infiniti Q60 | Equipment | 3 | — | |
| 2017 Infiniti Q60 | Equipment | 3 | — | |
| 2018 Infiniti QX30 | Equipment | 3 | — | |
| 2017 Infiniti QX30 | Equipment | 3 | — | |
| 2017 Infiniti QX50 | Equipment | 3 | — | |
| 2017 Infiniti QX70 | Equipment | 3 | — | |
| 2018 Infiniti QX80 | Equipment | 3 | — | |
| 2017 Infiniti QX80 | Equipment | 3 | — | |
| 2018 Nissan Armada | Equipment | 3 | — | |
| 2017 Nissan Armada | Equipment | 3 | — | |
| 2018 Nissan Rogue | Forward Collision Avoidance | 3 | — | |
| 2017 Nissan Rogue | Forward Collision Avoidance | 3 | — | |
| 2019 Infiniti QX50 | Service Brakes | 2 | — | Brake pads → |
| 2018 Nissan Altima | Equipment | 2 | — | |
| 2017 Nissan Altima | Equipment | 2 | — | |
| 2018 Nissan Maxima | Equipment | 2 | — | |
| 2017 Nissan Maxima | Equipment | 2 | — | |
| 2018 Nissan Murano | Equipment | 2 | — | |
| 2017 Nissan Murano | Equipment | 2 | — |
Showing the 25 model years where C1A04 appears most; it is on file for 32 in total.
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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C1A04 by make
The same record, one make at a time: the model years, bulletins and owner reports that name C1A04 on that maker’s vehicles.
What it gets filed under
95 manufacturer filings name C1A04. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names C1A04.
- SSM 55237 Service bulletin2026-10-12 · Unknown Or Other
- Some 2025-2026 Mustang GTD vehicles built on or before 28-Sep-2026 may exhibit one or more of the following hydraulic system warning messages displayed in the instrument panel cluster (IPC): "Suspension Fault Speed Limited to 80 MPH", "Driver Selectable Suspension Fault", "Front Lift Not Available", "Drive Mode Not Available" and/or "Active Aero Fault". Diagnostic trouble codes (DTC) U0037, U0759,
- NTB18-008A Service bulletin2021-03-24 · Forward Collision Avoidance
- ADAS SYSTEM DTC C1A03, C1A04, AND/OR C1B01 SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- ITB18-005B Service bulletin2021-03-24 · Equipment
- ADAS SYSTEM DTC C1A03, C1A04, AND/OR C1B01 SERVICE INFORMATION This bulletin has been amended. Please see AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
- NTB20-065 Service bulletin2020-09-16 · Engine And Engine Cooling
- 2017-2019 ARMADA; ENGINE DOES NOT CRANK IF YOU CONFIRM The engine will not crank and will not start, but the battery test result is OK, OR One of these DTCs are stored: ï· C1142 (PRESS SENSOR) ï· C1A04 (ABS/TCS/VDC SYSTEM) ï· C1A26 (ECD MODE MALFUNCTION) AND The color of the stop lamp switch is solid black, as shown in Figure 1. ACTION Replace the stop lamp switch.
- ITB18-005a Service bulletin2018-03-26 · Service Brakes, Air — Antilock — Abs Warning Light
- ADAS SYSTEM DTC C1A03, C1A04, AND/OR C1B01 SERVICE INFORMATION This bulletin has been amended. The Applied Vehicles section has been revised. No other changes have been made. Please discard previous versions of this bulletin.
- NTB18-008 Service bulletin2018-02-01 · Equipment — Other — Owners/Service/Other Manual
- ADAS SYSTEM DTC C1A03, C1A04, AND/OR C1B01 SERVICE INFORMATION This bulletin applies only to vehicles equipped with Automatic Emergency Braking (AEB) or Forward Emergency Braking (FEB). SERVICE INFORMATION If the following ICC/ADAS codes are stored, make sure to follow the diagnostic procedures in the Electronic Service Manual (ESM) before replacing any parts. C1A03 ? VEHICLE SPEED SENSOR
What C1A04 means
Source: SAE J2012 / OBD-IIC1A04 is a manufacturer-specific code: the second character is a 1, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about C1A04
Source: NHTSA files and the OBD-II standardWhy does this page not define C1A04?
Because it cannot be defined honestly. The second character of a trouble code says who owns its meaning, and a 1 or a 3 hands that to the manufacturer. Sites that print one definition for a manufacturer-specific code are showing you one automaker's meaning and hoping it is yours.
Can I keep driving with C1A04 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.