What Does U3011 Mean?
DTC U3011 indicates that a control module has detected a fault with the ignition switch input for the Off position. The Off position signal tells all modules to begin their shutdown sequence, save learned data, and enter sleep mode. This code sets when the Off signal is missing, the module does not detect a proper transition to Off when the key is removed, or the Off signal conflicts with other ignition position inputs.
Common Causes
35%
Ignition switch Off position contact stuck or worn — the switch continues to output a Run or Accessory signal even when the key is in the Off position or removed
25%
Wiring fault in the Off position signal circuit — shorted wire keeping the Off signal active or absent when expected
20%
BCM not detecting key-off due to corrupted ignition switch input processing or failed input comparator
20%
Ignition lock cylinder not fully returning to the Off position due to mechanical binding or a worn spring
Diagnostic Steps
1
Step 1: Monitor ignition switch position on the scan tool — turn the key to Off and remove it; verify the scan tool shows the Off position; if it shows Run or Accessory with the key removed, the switch is stuck or misadjusted.
2
Step 2: Check for parasitic battery drain — if the Off signal is not being recognized, modules may not enter sleep mode; measure current draw with the key off and doors closed (should drop below 50mA within 30 minutes); excessive draw confirms modules are staying awake.
3
Step 3: Inspect the ignition lock cylinder — verify the key and cylinder fully return to the Off position when released; check for any binding or failure of the return spring that would prevent the Off detent from being reached.
4
Step 4: Backprobe the ignition switch connector — verify that in the Off position, the correct pins show the expected voltage levels (typically all switch output pins should be de-energized in Off).
5
Step 5: If the switch and wiring test correctly, check the BCM's Off detection logic — clear codes and perform a controlled shutdown sequence while monitoring scan tool data; if the BCM consistently fails to register Off, it may need replacement or reprogramming.
Estimated Repair Cost
$75 - $500
Parts + labor, varies by vehicle and location
DTC U3011 indicates that a control module has detected a fault with the ignition switch input for the Off position. The Off position signal tells all modules to begin their shutdown sequence, save learned data, and enter sleep mode. This code sets when the Off signal is missing, the module does not ...
The most common cause of U3011 (Ignition Input Off) is: Ignition switch Off position contact stuck or worn — the switch continues to output a Run or Accessory signal even when the key is in the Off position or removed
Typical repair costs for U3011 range from $75 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
If the Off signal is not properly recognized, the vehicle may continue running after the key is removed, or modules may fail to enter sleep mode causing a dead battery. In some vehicles, the steering lock may not engage, reducing theft protection. Address promptly to prevent being stranded by a dead battery.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U3011 to identify the root cause.
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Quick Info
Category
Network
System
Ignition Switch / Power Management System
Difficulty
Type
Generic (SAE)
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