P1277 Mercedes-Benz Cylinder #7 High To Low Side Open

P1277 Mercedes-Benz Cylinder #7 High To Low Side Open

Possible causes
  • Fuel injector No. 7 output circuit short to voltage.
  • Injector.
  • NG Module.
    • Symptoms
    – Engine Light ON (or Service Engine Soon Warning Light)
    P1277 Mercedes-Benz Description

    Indicates a high voltage condition exists at the injector output of the NG module for cylinder No. 7 when low voltage is expected.

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