× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P1620 Diagnostic Trouble Code Discussion for October 2007

Low Engine Coolant Switch Circuit Low Input

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1620
Help Request Posted
2001 Volvo S60 2.4L Poor Idle Quality VIN: YV1RS61R01
P1620: MIL requested by the throttle unit. ... anyone has ran into this before. Customer compliant is when starting vehicle sometimes idle is very high (4K RPMS) then will idle down so low it will try to stall. Cruise is inop. CEL is not on but has a stored code P1620. If we clean the code it will come...
October 22, 2007