2007-2008 Yamaha Phazer Venture-Lite 500 Factory Service Manual, Page 279Get this manual
FUEL INJECTION SYSTEM Fault code No26 Symptom
Cylinder-#2 intake air pressure sensor: hose system malfunction (clogged or detached hose)
Diagnostic code No04 (cylinder-#2 intake air pressure sensor) Order Itemcomponents and probable cause Cylinder-#2 intake air pressure sensor hose is detached, clogged, kinked, or pinchedCylinder-#2 intake air pressure sensor malfunction at intermediate electrical potentialConnections Cylinder-#2 intake air pressure sensor coupler Wire harness ECU coupler Defective cylinder-#2 intake air pressure sensorCheck or maintenance job Repair or replace the sensor hoseInspect and repair the connectionReinstatement method Starting the engine and operating it at idle
Check the couplers for any pins that may have pulled outCheck the locking condition of the couplersIf there is malfunction, repair it and connect the coupler securelyExecute the diagnostic mode (code No04)Replace if defectiveRefer to "Fault code No25"