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2008 CADILLAC CTS
3.6L V6•RWD•AUTOMATIC•gas
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor494Torque4240Fluid8DTC1195Battery1Maintenance0Recalls2
P1107moderate severityPowertrain

MAP Sensor Circuit Intermittent Low Voltage

on 2008 Cadillac CTS 3.6L V6 · RWD

What this code means

The PCM detected intermittent low voltage drops from the MAP sensor circuit. This indicates a sporadic loss of signal, often caused by a loose connection.

Symptoms

  • Check Engine Light (intermittent)
  • Intermittent stalling
  • Surging at idle
  • Hesitation

Common causes

  • Loose MAP sensor connector
  • Intermittent open in wiring
  • Faulty MAP sensor
  • Corroded terminals

Diagnostic steps

  1. Wiggle test MAP sensor connector while monitoring voltage
  2. Inspect wiring for breaks
  3. Test MAP sensor
  4. Check 5-volt reference supply

Repair notes

Clean connectors and repair any damaged wiring. Replace MAP sensor if faulty.

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