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Home / DTC / P1113 — Intake Resonance Switchover Solenoid Control Circuit

P1113 — Intake Resonance Switchover Solenoid Control Circuit

Detailed page for trouble code P1113.

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Code

P1113

HUMMER P — Powertrain

Intake Resonance Switchover Solenoid Control Circuit

Brand: HUMMER
Type: P — Powertrain
AI status
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Page language: EN

Causes

  • Open or short in solenoid wiring (power or ground)
  • Poor or corroded connector at solenoid or ECM
  • Failed intake resonance switchover solenoid (stuck or coil open/shorted)
  • ECM driver output fault
  • Blown fuse or faulty relay supplying solenoid circuit
  • Mechanically stuck resonance valve or vacuum/pneumatic actuator

Symptoms

  • Check Engine Light (MIL) illuminated
  • Reduced engine performance or hesitation at certain RPMs
  • Rough idle or surging
  • Decreased fuel economy
  • Tapping or unusual intake noise when valve does not move
  • Possible limp-home mode or limited power depending on vehicle strategy

What to check

  • Read freeze frame and stored data with a scan tool; confirm P1113 is current or historic
  • Observe commanded status and actual feedback/monitor PID for the intake resonance solenoid while commanding ON/OFF
  • Visually inspect solenoid connector and wiring for corrosion, damage, or water intrusion
  • Check related fuses/relays for continuity and correct operation
  • Backprobe solenoid connector to verify supply voltage and control signal from ECM while commanding
  • Measure solenoid coil resistance with DVOM with connector disconnected

Signal parameters

  • Expected control signal: switched 0V (OFF) to battery voltage or PWM from ECM (0–12V depending on command)
  • Common PWM duty: 0–100% (frequency varies by design; often tens to few hundred Hz)
  • Typical coil resistance range (typical small solenoids): ~10–50 ohms (refer to OEM spec for exact value)
  • When commanded ON: voltage at solenoid should rise near battery; when OFF: voltage should be ~0V (or show PWM duty)
  • No high resistance or intermittent open should be present in circuit

Diagnostic algorithm

  1. Connect a scan tool, confirm P1113 and note freeze frame / PID values. Attempt to reproduce fault by cycling ignition and commanding the solenoid if tool allows.
  2. Inspect the solenoid, mounting, and harness. Repair visible connector corrosion, bent pins, or damaged insulation before further testing.
  3. With ignition OFF, disconnect solenoid connector and measure coil resistance with DVOM. Compare to OEM spec. Infinite/open or very low (short) indicates failed coil.
  4. With connector disconnected, check for battery voltage on the power feed circuit with ignition ON. If absent, trace fuse/relay/wiring to source.
  5. Backprobe control/driver wire at solenoid with ignition ON and command solenoid ON via scan tool; verify control signal (voltage or PWM) appears. If no control signal at solenoid but present at ECM pin, check harness continuity.
  6. Check continuity/resistance between solenoid connector and ECM pin for the control circuit and for ground/reference circuit. Repair any opens/shorts.
  7. Apply battery voltage directly to the solenoid (bench or via fused jumper) to confirm it actuates and valve moves. Do not exceed battery voltage; observe proper operation.
  8. If wiring and solenoid are good but control signal abnormal, test ECM driver output and grounds. Replace ECM only after confirming all wiring and loads are known-good and following OEM procedures.
  9. After repair or component replacement, clear codes and perform a road test and extended monitoring to confirm the fault does not return.

Likely causes

  • Damaged or corroded connector at solenoid
  • Open/short in harness between solenoid and ECM
  • Failed solenoid coil
  • Mechanically seized resonance valve preventing expected response

Fault status

⚠️ Status
P1113 — Intake Resonance Switchover Solenoid Control Circuit: ECM detected an open, short, or implausible signal on the intake resonance solenoid control circuit. Inspect solenoid, wiring, connectors, fuses/relays, and ECM driver.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5 - 2.0 hours

Similar codes

P1114 P0101 P0171 P0300 P0507
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