Code Definition

B1826 — Wiper Rear High Limit Input Circuit Failure

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

About B1826

B1826 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 B1826 is stored, the module has detected a signal or supply voltage higher than the expected operating range.

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.

B1826 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 B1826 code is set by the Body Control Module (BCM) when it detects an electrical fault in the rear wiper park sense (high limit) input circuit. The rear wiper motor includes an internal park switch that signals the BCM when the wiper blade has reached its uppermost rest position, allowing the BCM to remove drive voltage at the correct point. When the BCM detects the park sense input is incorrect for the commanded wiper state, such as a short to power, short to ground, or open circuit, this fault is logged. Drivers may notice the rear wiper failing to park correctly, stopping mid sweep, run...

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