How to Use Trouble Codes

Toyota does not provide Trouble Code driven diagnostic charts for this vehicle. Refer to "Circuit Test Charts" under "Non-Trouble Code Procedures" and testing procedures for the component or system to which the Trouble Code refers. Circuit Test Charts (For Trouble Code Diagnosis)
Chart numbers and components or systems related to testing for each Trouble Code are listed below.

Note: Not all Codes are applicable to all models.

Code 12: Refer to Chart 5 and Ignition System testing
Code 13: Refer to Ignition System testing
Code 14: Refer to Chart 7
Code 16: Refer to ECM testing
Code 21: Refer to Oxygen Sensor test under "Circuit Test Charts" and component/circuit testing
Code 22: Refer to Chart 4
Code 24: Refer to Chart 3
Code 25: Refer to Chart 9 and Oxygen Sensor test under "Circuit Test Charts" and component testing
Code 26: Refer to Chart 9 and Oxygen Sensor test under "Circuit Test Charts" and component testing
Code 27: Refer to Oxygen Sensor test under "Circuit Test Charts" and component testing
Code 31: Refer to Chart 3
Code 32: Refer to Chart 3
Code 41: Refer to Chart 2
Code 42: Refer to Vehicle Speed Sensor component testing
Code 43: Refer to Chart 5
Code 51: Refer to Chart 2, A/C Switch circuit, or PNP Switch (A/T) component testing
Code 52: Refer to Knock Sensor component testing
Code 53: Refer to ECM testing
Code 71: Refer to EGR Gas Temp Sensor test under "Circuit Test Charts" and component testing