Toyota Engines - Auto Repair Codes

Scan Tool for Codes and Live Data for your Toyota Engine from $199 USD

The information below may apply to Toyota Avalon, Avante and many other models

Step 4

Toyota EFI Code Reading

Connector Diagram

Note: You may need the OBD2 / EOBD or UniPlug vehicle specific software.
Click here for more info.

Auto Repair Manual - How to read codes (No Special Tools Needed)

1 If possible run the engine to bring the oxygen sensor up to operating temperature then switch the engine off.

2 Connect the terminals with your own wire link, (Click here for details) , as shown on the diagram.

3 Turn ignition ON, the Check Engine Light (CEL) should be flashing.

4 Read codes as described in the Code Format Description below.

5 Press the continue button to enter the code numbers and get the code description.

Code Format Diagram

Code Format Description

• Each code is made up of two series of flashes.

• The first series indicates the 'tens' digit.

• The second series indicates the 'ones' digit.

• A 2.5 second pause separates each code.

• A 1.5 second pause separates the 'tens' and 'ones'. If no 1.5 second pause is found, code is single digit.

• No Fault Codes indicated by short repeating flashes.

• Code Format Diagram shows code No. 32.

To move to the next screen click on the Continue button

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Note on Example Model(s): Toyota Avalon, Avante
The example model(s) shown, Toyota Avalon, Avante for this auto repair service are only an indication to help you. There may be many other models that apply to this connector. Click above link to see the complete vehicle coverage list.