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P0814 Powertrain

Transmission Range Display Circuit

General electrical fault on the transmission range display circuit — drives the PRNDL indicator on the dashboard. With the input invalid the indicator may show the wrong gear range or stay blank.

Affected components

  • Prndl display
  • Wiring harness

Common causes

  • High likelihood: Open or shorted display wire

Possible symptoms

  • Check engine or transmission warning light on
  • Harsh, delayed, or missing shifts
  • Possible limp mode (locked in one gear)
  • Slipping or shuddering during gear changes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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