Code Definition

P1835 — Automatic transmission kickdown switch fault

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Acura

About P1835

P1835 is a manufacturer-specific powertrain diagnostic trouble code recorded for Acura vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1835 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

This code relates to the automatic transmission kickdown switch circuit. The kickdown switch tells the Powertrain Control Module (PCM) when the driver demands maximum acceleration so the transmission can command a downshift to a lower gear. On many designs this is a switch that closes at or near wide open throttle, or a function derived from the accelerator pedal. DTC P1835 sets when the PCM detects an abnormal or implausible kickdown switch signal, such as one stuck high or low, missing, or inconsistent with throttle position and vehicle speed during conditions where kickdown is expected. Wit...

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