Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Trouble Code Chart
2007 Lexus ES 350SECTION Diagnostic Trouble Code Chart
CERTIFICATION ECU DIAGNOSTIC TROUBLE CODE CHART
CERTIFICATION ECU DIAGNOSTIC TROUBLE CODE CHART
| DTC Code | Detection Item | Trouble Area |
|---|---|---|
| B2784 | Antenna Coil Open / Short |
|
| B2785 | Communication Malfunction between ECUs Connected by LIN |
|
| B2786 | No Response from Steering Lock ECU |
|
| B2789 | No Response from ID BOX |
|
| B278A | Short to GND in immobilizer System Power Source Circuit |
|
| B2790 | ID BOX EEPROM Malfunction | ID code box |
| B2791 | Communication Condition Failure between ECM | - |
ECM DIAGNOSTIC TROUBLE CODE CHART
ECM DIAGNOSTIC TROUBLE CODE CHART
| DTC Code | Detection Item | Trouble Area |
|---|---|---|
| B2799 | Engine immobilizer System Malfunction |
|
HINT:
The DTCs for the engine immobilizer system are specified above. If other codes are output, check the DTC chart for the SFI system.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.