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2006 LINCOLN MARK LT
5.4L V8•RWD•AUTOMATIC•gas
5 active safety recalls on this vehicle — view recalls
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Repairs0Labor499Torque2214Fluid7DTC1061Battery1Maintenance0Recalls5
P1460low severityPowertrain

Wide Open Throttle A/C Cutoff Circuit Malfunction

on 2006 Lincoln Mark LT 5.4L V8 · RWD

What this code means

The WOT A/C cutoff circuit has a malfunction. This circuit is supposed to disable the A/C compressor at wide-open throttle to maximize available engine power.

Symptoms

  • Check Engine Light
  • A/C may not disengage at WOT
  • Reduced WOT performance
  • A/C compressor may not engage at all

Common causes

  • Faulty WOT relay
  • Wiring issue in A/C cutoff circuit
  • PCM driver failure
  • Faulty A/C clutch relay

Diagnostic steps

  1. Test A/C cutoff relay
  2. Check wiring to relay and A/C compressor clutch
  3. Verify PCM commands A/C off at WOT
  4. Test A/C system operation

Repair notes

Replace faulty relay. Repair wiring in A/C cutoff circuit.

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