P1653 TOYOTA - SCV Circuit Malfunction 0 | Add Comment Possible causes Low engine oil level Faulty Oil Control Valve What does this mean? Possible symptoms Engine Light ON (or Service Engine Soon Warning Light) OBDII Code P1653 Toyota - SCV Circuit Malfunction - AutoCodes.com Need more help? Do you need more help with the P1653 Toyota code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code
