P0814
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.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: medium
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
Common causes
Ordered by how often each turns out to be the cause.
- Open or shorted display wireCommon
Parts involved
- Prndl Display
- Wiring Harness
P0814 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.