Diagnostic Trouble Code Chart

2004 Toyota Matrix XR, FWD, StandardSECTION Diagnostic Trouble Code Chart
WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TROUBLE CODE CHART

DTC No. Circuit Inspection Trouble Area
No DTC "System OK" -
1Β  "Code 1" GPS antenna failure
  • GPS antenna
  • Telephone ECU (Mayday ECU)
  • Wire harness
2Β  "Code 2" Button module failure
  • Mayday switch
  • Telephone ECU (Mayday ECU)
  • Wire harness
3Β  "Code 3" Transceiver failure
  • Transceiver
  • Telephone ECU (Mayday ECU)
  • Wire harness
4Β  "Code 4" ECU failure Telephone ECU (Mayday ECU)
5Β  "Code 5" Back-up battery failure
  • Back-up battery
  • Telephone ECU (Mayday ECU)
  • Wire harness
6Β  "Code 6" Loss of BEAN communication
  • Accessory bus buffer
  • Telephone ECU (Mayday ECU)
  • Wire harness

HINT:

After all of the instruction messages have been provided, the voice of "Diagnostic complete" follows.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.