P1783 on Mazda

Transmission fluid over-temperature condition on Ford and Mazda automatics

Severity not verified — if the car runs badly, have it inspected

The code reports overheated transmission fluid, and owners report burnt fluid and rebuilt transmissions, but we found no source that sets a safe driving limit.

It gets more serious if:

  • Inspect soon: The O/D OFF light blinks, the fluid smells burnt, or the transmission slips or shifts harshly.

Source: how we rate severity

This page covers only what differs on Mazda. For what P1783 means, the ranked causes and the test order, see the P1783 guide.

What's different on Mazda

Mazda

  • 1998–2001 · 626

    Supported by vehicle data

    626 bulletin 0500502 covers a blinking O/D OFF light with P1783 after extended highway driving; owners report a cooling kit as the fix.

  • 2001–2005 · Tribute

    Supported by vehicle data

    Tribute bulletin 0500504 covers P1783 and P0733 with cold-climate shift concerns.

  • 0500502Status unverified

    O/D OFF light flashing with P1783 after extended highway driving

    1998–2001626 · NHTSA 634465

    Describes the blinking O/D OFF light with P1783 after long highway drives; owners quote a cooling kit as the fix.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • 0500504Status unverified

    A/T indicator lamp on with P1783 and/or P0733, or cold-climate shift concerns

    2001–2005tribute · NHTSA 10015682

    Covers the transaxle indicator lamp with these codes and cold-climate shift or engagement concerns.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Sources and review

  1. Mazda bulletin 0500502: O/D OFF light flashing with P1783 after extended highway driving — Mazda North American Operations (via NHTSA flat-file summary)
  2. NHTSA complaint 636798: 2002 Mazda 626, P1783 — NHTSA (owner complaint)
  3. NHTSA complaint 698214: 1998 Mazda 626, P1783 — NHTSA (owner complaint)
  4. Mazda bulletin 0500504: A/T indicator lamp on with P1783 and/or P0733, or cold-climate shift and engagement concerns — Mazda North American Operations (via NHTSA flat-file summary)
  5. NHTSA complaint 577703: 2002 Ford Explorer, P1783 — NHTSA (owner complaint)
  6. NHTSA complaint 2112327: 2020 Ford Explorer, P1783 — NHTSA (owner complaint)
Last reviewed
Written by
Saurabh K.
Editorial review
Pending
Technician review
Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

My Car

Pick your car and code pages will point out notes and bulletins for it. Saved only in this browser.

Fill this in from your VIN

Used once to identify your engine; not stored.