What does P0826 Mean? OBD-II Code Tap shifting will be disabled is defined as a Up and Down Shift Switch Circuit Some vehicles equipped with automatic transmission will give the driver the option of selecting the desired gear while driving, known as TAP Shifting. The shifter will usually either have a + ahd - button on it, or shift side to side when in Drive. If the downshift switch does not function correctly, code P0826 will set and the TAP Shift function will be disabled. engine code P0826P0826 fixobd P0826dtc P0826obd code P0826obd2 P0826P0826 car codediagnostic code P0826car code P0826check engine code P0826fehlercode P0826P0826 fiatcodigo P0826codigo falla P0826P0826 kody b??dówcodigo de falla P0826 What are the common causes of P0826 ? Faulty Up and Down Shift Switch Up and Down Shift Switch harness is open or shorted Up and Down Shift Switch circuit poor electrical connection How do you troubleshoot P0826 ? The engine system, in conjuction with the engine control module (ECM)/powertrain control module (PCM), activates the P0826 code solenoid valve to control oil pressure to the engine mechanism that is installed in the valve system to switch valve timing between Low and High.If the engine solenoid valve has an open or short circuit, a DTC is stored. Searches related to P0826 - Up and Down Shift Switch Circuit up and down shift switch circuit nissan altima p0826 chevy p0826 code nissan altima how to fix p0826 p0826 nissan altima 2010 p0826 land rover p0827 p1701