Kia Engines - Auto Repair Codes

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

The information below may apply to Kia Optima, Rio and many other models

Step 5

Kia EFI Code Reading

Connector Diagram

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

IMPORTANT:If after you turn the ignition on no codes are output, then there are either NO fault codes OR the vehicle has not been put into diagnostics mode correctly. To test the connection generate a fault code by disconnecting the throttle position sensor, then crank or run the engine and re-run the test.

1 Warm the engine to operating temperature.

2 Switch ingition OFF.

3 Connect an LED tester or Voltmeter to terminals 'A' & 'B' (Click here for details) 

4 Use the Rennacs red wire link or your own wire link to connect terminals '12' & '19' or terminals '4' & '19' as shown in the diagram.

5 Turn ignition ON.

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

7 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 long flashes indicate the 'tens' digits.

• The short flashes indicate the 'ones' digits.

• A long pause separates each code sequence.

• Code Format Diagram shows code No. 12.

To move to the next screen click on the Continue button

 Continue > 

Note on Example Model(s): Kia Optima, Rio
The example model(s) shown, Kia Optima, Rio 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.