Code Definition

B1237 — Window Feedback Out of Range

System: Body  |  Type: Manufacturer-Specific  |  Make: Generic

About B1237

B1237 is a manufacturer-specific body diagnostic trouble code. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1237 is stored, the module has detected a plausibility fault — the measured value is in the electrical range but is not consistent with expected operating behaviour.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

B1237 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The window feedback signal is used by the door control module, or on some vehicles the body control module, to monitor the position and movement of the power window as the motor drives the regulator. This signal typically comes from hall effect ripple sensors inside the motor that produce pulses proportional to motor rotation, allowing the module to track window travel for features such as one touch auto up, anti pinch protection, and express down. DTC B1237 is set when the module detects that the feedback signal is either missing, erratic, or outside the expected count range during window ope...

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