WebOBD-II Trouble Code Description for P0491 Porsche Secondary Air Injection System Insufficient Flow The OBD2 Code Information Be Applicable For Porsche: WebNov 9, 2024 · Diagnosing Porsche Cayenne with secondary air fault codes P0491 P0492. This is common in Porsche Cayenne, so most owners should expect to encounter this repair and budget accordingly. If you...
P0491: Code Meaning, Causes, Symptoms, & Tech Notes - Engine-Codes.com
WebAug 12, 2024 · P0491 Secondary Air Injection System, Bank 1 - Below Limit. Possible cause of fault - Fuse F3 faulty - Open circuit to secondary air injection pump - Short circuit to … WebSep 27, 2024 · Recently my '07 Cayman presented engine codes P0491 and P0492 which are associated with the secondary air system. After researching the issue I resolved to test … cummins master rebuild center
Troubleshooting Porsche Check Engine Light - YOUCANIC
WebLabor: 1.0. The cost to diagnose the P0491 Ford code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your … WebNov 2, 2011 · P0491 Secondary Air Injection System, Bank 1 - Insufficient Flow P0492 Secondary Air Injection System, Bank 2 - Insufficient Flow Possible cause of fault - Electrical fault in power supply or line between relay and secondary air injection pump - Secondary air injection pump relay mechanically faulty Web What Does the P0491 Code Mean? An air pump is used on the vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module ( PCM) grounds the Air pump relay control circuit which energizes the Air pump. The PCM also grounds the Air combination valve vacuum control solenoid circuit, which energizes the Air vacuum control solenoid. easy 4 ingredient cheese ball