P0620 - P0624: System Diagnosis for DTC Codes (2006) - Page 411
P0620 - P0624: Testing and Inspection
P0622
For diagnosis of code P0622, refer to chart:
P0622
If there is no link in the chart then:
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This code is not a valid code for this vehicle
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Or information published by the manufacturer for this vehicle did not include this code
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For complete diagnosis of the system, follow this link: See: Powertrain Management/Computers and Control Systems/Testing and Inspection