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Dan, Technician
Category: Saturn
Satisfied Customers: 23765
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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My diagonistic... P1779 P1780 P0700 What do they mean

Resolved Question:

These codes appeared in my diagonistic...
What do they mean???
Thank You Clarence
Submitted: 7 years ago.
Category: Saturn
Expert:  Dan replied 7 years ago.
What year, model, and engine size of vehicle? Thanks
Customer: replied 7 years ago.
2002 saturn vue awd
Expert:  Dan replied 7 years ago.

These codes indicate there is likely a wiring problem or the ECM (Engine Control Module) needs to be replaced. At this point you would want to bring your vehicle to the dealership so they can erase the codes and reflash the computer then check again what codes come back and go from there. If the ECM is the problem you can get a used one from sort by price and have them ship it to you. Let me know if there is anything else I can do to help. Thanks





P1779 Engine Torque Signal Below Lower Limit Detected

Possible CausesSetting Conditions
  • Perform an Onboard Diagnostic System Check of the ECM
  • Repair any other ECM related trouble codes stored in memory
  • ECM may have failed

P1780 Torque Reduction Request Failed

Possible CausesSetting Conditions
  • Perform an Onboard Diagnostic System Check of the ECM
  • The ECM is not sending the required information to the TCM (the problem is not related to the TCM)
  • Check for any trouble codes related to the CAN data bus
  • ECM has failed


P0700 Transmission Control Module Requested MIL Operation - With Automatic Transmission

Possible CausesSetting Conditions
  • Perform the Diagnostic System Check for Vehicle Controls
  • Refer to any trouble codes that are identified after the check is completed.

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