Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
The IMTV system is monitored for failure during continuous, key ON engine OFF or key ON engine running self-test. The test fails when the signal on the monitor pin is more or less than an the expected calibrated range.
The cost to diagnose the P0660 1997 FORD F150 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 engine type. Most auto repair shops charge between $75 and $150 per hour.
The Engine Control Module (ECM) has detected an improper signal from the Intake Manifold Tuning Valve (IMTV)
The Powertrain Control Module (PCM) continuously monitor the Intake Manifold Tuning Valve (IMTV) system during Key ON Engine OFF (KOEO) or Key ON Engine Running (KOER) self-test. The PCM sets the OBDII code when the signal on is more or less than the expected calibrated range.
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