P0821 Code - Gear Lever X Position Circuit

Discussion in 'P - Powetrain Codes' started by fault code, Mar 25, 2018.

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    fault code Administrator Staff Member

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    What does P0821 Mean?

    The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue. When you see P0821 engine fault code on your engine code reader this description will help you.

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    What are the common causes of P0821 ?

    The PCM is receiving input that is out of normal parameters from transmission shift solenoids, the torque converter lockup solenoid, vehicle speed sensors or other sensors. The PCM interprets this as an incorrect transmission shifter range, which results in a trouble code being stored and the malfunction indicator lamp (MIL) being illuminated. The transmission may also go into limp-in mode.

    More often than not, the P0821 code is due to an out-of-adjustment transmission range sensor or failed transmission range sensor.

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    How do you troubleshoot P0821 ?

    Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble.

    Searches related to P0821 Code - Gear Lever X Position Circuit
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