Powertrain, generic · Transmission

P0953 Auto Shift Manual Control Circuit High

Check engine lightUsually off

EmissionsNot relevant

Drive cycleNot required

Limp modeNo

Voltage on the manual up/down request circuit lies above its expected window. Common reasons are a signal wire shorted to battery voltage or, where the input is pulled up internally, a broken wire or a switch that never closes. A Volkswagen patent names a short to plus and a line break as faults its tip-gate diagnosis detects with the lever in P or R; a Chrysler patent shows the classic AutoStick-style gate with one switch for up and one for down. No manufacturer documents this exact code publicly; CARB requires circuit checks on such inputs. P0952 covers the low side, P0954 dropouts, P0950 the general fault. Manual shifting is usually disabled, automatic mode remains.

Likely causes

Signal wire shorted to a voltage-carrying wire in the shifter harness

Broken wire or unplugged connector on a pulled-up input

Missing ground of the tip switch or Hall sensor

Faulty input stage in the transmission control module

Symptoms

Tip gate or paddles have no effect
Warning or message about manual mode
Automatic shifting continues normally

Repair estimate

DifficultyMediumDIY possible

Parts and labour€40–450

Time0.5–2.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

auto shift manual switchwiring harnesstcm

References: law.cornell.edu, patents.google.com, patents.google.com.