Conditions For Setting DTC

1998 Oldsmobile Achieva 3.1 M, 4T40E/MN4SECTION Conditions For Setting DTC
WARNING: This page is about a different car, the 1998 Pontiac Sunfire and 1998 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

DTC sets when voltage difference between PASSENGER HIGH terminal No. 1 and PASSENGER LOW terminal No. 4 is greater than or equal to 400 millivolts for 500 milliseconds during DEPLOYMENT LOOP CONTINUITY, RESISTANCE MEASUREMENT, or CONTINUOUS MONITORING tests.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.