What Does C1841 Mean?
The air suspension control module has detected an open circuit in the air suspension disable switch wiring. There is a break in the electrical path between the switch and the module, preventing the module from reading the switch position. The system will likely default to a safe mode, and the air suspension warning light will be on.
Common Causes
35%
Wire in the disable switch circuit has broken or become disconnected, often from physical damage in the trunk area
30%
Disable switch connector is unplugged or has a backed-out pin
20%
Disable switch has failed open internally (contacts no longer make contact in the ON position)
15%
Module-side connector for the switch circuit has a damaged or corroded pin
Diagnostic Steps
1
Locate the disable switch and verify the connector is fully seated — it may have been knocked loose during trunk loading/unloading or spare tire access.
2
Disconnect the switch and measure continuity across the switch terminals in the ON position — an OL reading indicates the switch has failed open internally.
3
With the switch disconnected, check continuity from each switch connector pin back to the corresponding air suspension module connector pins — an open indicates a wiring break.
4
Inspect the wiring path from the switch location to the module, focusing on areas where the harness transitions between body panels, passes through grommets, or is exposed to physical damage.
5
Verify the module-side connector pins are not recessed, corroded, or damaged — use a terminal pick to check pin spring tension.
Estimated Repair Cost
$25 - $250
Parts + labor, varies by vehicle and location
The air suspension control module has detected an open circuit in the air suspension disable switch wiring. There is a break in the electrical path between the switch and the module, preventing the module from reading the switch position. The system will likely default to a safe mode, and the air su...
The most common cause of C1841 (Air Suspension Disable Switch Circuit Open) is: Wire in the disable switch circuit has broken or become disconnected, often from physical damage in the trunk area
Typical repair costs for C1841 range from $25 to $250, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle is safe to drive. The air suspension may operate in a default mode. The most common cause is simply a disconnected switch connector, which is a quick fix. Verify the switch position and connector before performing extensive diagnostics.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1841 to identify the root cause.
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Quick Info
Category
Chassis
System
Air Suspension System
Difficulty
Type
Manufacturer
Recommended Tools
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