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Home / DTC / P0114 — Intake Air Temperature Sensor 1 Circuit Intermittent Bank 1

P0114 — Intake Air Temperature Sensor 1 Circuit Intermittent Bank 1

Detailed page for trouble code P0114.

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P0114

Generic P — Powertrain

Intake Air Temperature Sensor 1 Circuit Intermittent Bank 1

Brand: Generic
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Corroded, loose, or damaged IAT sensor connector or pins
  • Broken or chafed wiring harness between IAT sensor and ECM
  • Intermittent short to voltage or ground in the IAT circuit
  • Failed IAT sensor (thermistor intermittent)
  • Poor engine/ECM ground or reference voltage supply
  • Intermittent ECM input circuit fault or solder joint

Symptoms

  • Malfunction Indicator Lamp (MIL) may illuminate sporadically
  • Intermittent rough idle, hesitation or stumbling under load
  • Erratic fuel trim behavior, occasional increased fuel consumption
  • Difficult or inconsistent cold starts (possible)
  • No constant sensor reading for intake temperature on scan tool (fluctuating or dropping to open)

What to check

  • Scan tool: read IAT PID while engine cold to warm and observe for dropouts or erratic jumps
  • Check freeze frame / freeze data and frequency of fault occurrence
  • Visually inspect IAT sensor connector and wiring for damage, corrosion, or looseness
  • Backprobe connector and check reference voltage and signal with ignition ON/engine running
  • Measure sensor resistance at the harness connector (with sensor disconnected) and compare to expected thermistor behavior as temperature changes
  • Perform wiggle test on harness and connector while monitoring IAT PID/voltage for intermittent changes

Signal parameters

  • Sensor type: normally an NTC thermistor (resistance decreases as temp rises)
  • Expected signal voltage: typically in the 0.1–4.9 V range depending on intake temp and vehicle design
  • Typical resistance at ~20°C: on many vehicles roughly 1–10 kΩ (varies by manufacturer)
  • Open-circuit: signal voltage often near reference supply (or diagnostic tool shows OL/infinite resistance)
  • Short to ground: signal voltage near 0 V; short to battery: signal near reference voltage (~5 V)

Diagnostic algorithm

  1. Retrieve freeze frame and clear code; attempt to recreate fault by cycling ignition/engine and monitor IAT PID for intermittent behavior
  2. Visually inspect sensor, connector, and wiring harness; repair visible damage, corrosion, or bent pins
  3. Backprobe IAT connector: with ignition ON measure reference voltage (if applicable) and signal voltage while varying intake air temperature (or blow air/cold spray) — signal should move smoothly
  4. Measure sensor resistance at sensor leads (disconnect sensor). Compare to a known thermistor resistance vs temperature chart for the vehicle or general NTC behavior. Replace sensor if values are out of expected range or erratic
  5. Perform continuity/resistance check from sensor connector to ECM input pin; wiggle harness to look for intermittent opens
  6. If intermittent voltage spikes or noise are seen, inspect/repair grounds and any shielding; install/repair grounds as needed
  7. If wiring and sensor test good but intermittent signal persists, swap/replace the IAT sensor with a known-good unit and retest
  8. If intermittent persists after harness and sensor replacement, consider ECM input circuit fault — consult service information and consider ECM bench test/replacement

Likely causes

  • Damaged/loose connector at IAT sensor
  • Frayed or intermittent wiring (chafe/wire break) between sensor and ECM
  • Failing IAT sensor element (internal intermittent)
  • Corrosion or poor contact at mating connector pins
  • ECM input/ground problem (less common)

Fault status

⚠️ Status
Intermittent fault reported in Intake Air Temperature Sensor 1 circuit (Bank 1). ECM detected an unstable/open/short/erratic IAT signal condition; fault set intermittently rather than continuously.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

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Code

P0114

GWM P — Powertrain

- Inlet air temperature sensor fault

Brand: GWM
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Corroded, loose, or damaged IAT sensor connector or pins
  • Broken or chafed wiring harness between IAT sensor and ECM
  • Intermittent short to voltage or ground in the IAT circuit
  • Failed IAT sensor (thermistor intermittent)
  • Poor engine/ECM ground or reference voltage supply
  • Intermittent ECM input circuit fault or solder joint

Symptoms

  • Malfunction Indicator Lamp (MIL) may illuminate sporadically
  • Intermittent rough idle, hesitation or stumbling under load
  • Erratic fuel trim behavior, occasional increased fuel consumption
  • Difficult or inconsistent cold starts (possible)
  • No constant sensor reading for intake temperature on scan tool (fluctuating or dropping to open)

What to check

  • Scan tool: read IAT PID while engine cold to warm and observe for dropouts or erratic jumps
  • Check freeze frame / freeze data and frequency of fault occurrence
  • Visually inspect IAT sensor connector and wiring for damage, corrosion, or looseness
  • Backprobe connector and check reference voltage and signal with ignition ON/engine running
  • Measure sensor resistance at the harness connector (with sensor disconnected) and compare to expected thermistor behavior as temperature changes
  • Perform wiggle test on harness and connector while monitoring IAT PID/voltage for intermittent changes

Signal parameters

  • Sensor type: normally an NTC thermistor (resistance decreases as temp rises)
  • Expected signal voltage: typically in the 0.1–4.9 V range depending on intake temp and vehicle design
  • Typical resistance at ~20°C: on many vehicles roughly 1–10 kΩ (varies by manufacturer)
  • Open-circuit: signal voltage often near reference supply (or diagnostic tool shows OL/infinite resistance)
  • Short to ground: signal voltage near 0 V; short to battery: signal near reference voltage (~5 V)

Diagnostic algorithm

  1. Retrieve freeze frame and clear code; attempt to recreate fault by cycling ignition/engine and monitor IAT PID for intermittent behavior
  2. Visually inspect sensor, connector, and wiring harness; repair visible damage, corrosion, or bent pins
  3. Backprobe IAT connector: with ignition ON measure reference voltage (if applicable) and signal voltage while varying intake air temperature (or blow air/cold spray) — signal should move smoothly
  4. Measure sensor resistance at sensor leads (disconnect sensor). Compare to a known thermistor resistance vs temperature chart for the vehicle or general NTC behavior. Replace sensor if values are out of expected range or erratic
  5. Perform continuity/resistance check from sensor connector to ECM input pin; wiggle harness to look for intermittent opens
  6. If intermittent voltage spikes or noise are seen, inspect/repair grounds and any shielding; install/repair grounds as needed
  7. If wiring and sensor test good but intermittent signal persists, swap/replace the IAT sensor with a known-good unit and retest
  8. If intermittent persists after harness and sensor replacement, consider ECM input circuit fault — consult service information and consider ECM bench test/replacement

Likely causes

  • Damaged/loose connector at IAT sensor
  • Frayed or intermittent wiring (chafe/wire break) between sensor and ECM
  • Failing IAT sensor element (internal intermittent)
  • Corrosion or poor contact at mating connector pins
  • ECM input/ground problem (less common)

Fault status

⚠️ Status
Intermittent fault reported in Intake Air Temperature Sensor 1 circuit (Bank 1). ECM detected an unstable/open/short/erratic IAT signal condition; fault set intermittently rather than continuously.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

Similar codes

P0113 P0112 P0115 P0118 P0102 P0103
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Code

P0114

HUMMER P — Powertrain

Intake Air Temperature Circuit Intermittent

Brand: HUMMER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Corroded, loose, or damaged IAT sensor connector or pins
  • Broken or chafed wiring harness between IAT sensor and ECM
  • Intermittent short to voltage or ground in the IAT circuit
  • Failed IAT sensor (thermistor intermittent)
  • Poor engine/ECM ground or reference voltage supply
  • Intermittent ECM input circuit fault or solder joint

Symptoms

  • Malfunction Indicator Lamp (MIL) may illuminate sporadically
  • Intermittent rough idle, hesitation or stumbling under load
  • Erratic fuel trim behavior, occasional increased fuel consumption
  • Difficult or inconsistent cold starts (possible)
  • No constant sensor reading for intake temperature on scan tool (fluctuating or dropping to open)

What to check

  • Scan tool: read IAT PID while engine cold to warm and observe for dropouts or erratic jumps
  • Check freeze frame / freeze data and frequency of fault occurrence
  • Visually inspect IAT sensor connector and wiring for damage, corrosion, or looseness
  • Backprobe connector and check reference voltage and signal with ignition ON/engine running
  • Measure sensor resistance at the harness connector (with sensor disconnected) and compare to expected thermistor behavior as temperature changes
  • Perform wiggle test on harness and connector while monitoring IAT PID/voltage for intermittent changes

Signal parameters

  • Sensor type: normally an NTC thermistor (resistance decreases as temp rises)
  • Expected signal voltage: typically in the 0.1–4.9 V range depending on intake temp and vehicle design
  • Typical resistance at ~20°C: on many vehicles roughly 1–10 kΩ (varies by manufacturer)
  • Open-circuit: signal voltage often near reference supply (or diagnostic tool shows OL/infinite resistance)
  • Short to ground: signal voltage near 0 V; short to battery: signal near reference voltage (~5 V)

Diagnostic algorithm

  1. Retrieve freeze frame and clear code; attempt to recreate fault by cycling ignition/engine and monitor IAT PID for intermittent behavior
  2. Visually inspect sensor, connector, and wiring harness; repair visible damage, corrosion, or bent pins
  3. Backprobe IAT connector: with ignition ON measure reference voltage (if applicable) and signal voltage while varying intake air temperature (or blow air/cold spray) — signal should move smoothly
  4. Measure sensor resistance at sensor leads (disconnect sensor). Compare to a known thermistor resistance vs temperature chart for the vehicle or general NTC behavior. Replace sensor if values are out of expected range or erratic
  5. Perform continuity/resistance check from sensor connector to ECM input pin; wiggle harness to look for intermittent opens
  6. If intermittent voltage spikes or noise are seen, inspect/repair grounds and any shielding; install/repair grounds as needed
  7. If wiring and sensor test good but intermittent signal persists, swap/replace the IAT sensor with a known-good unit and retest
  8. If intermittent persists after harness and sensor replacement, consider ECM input circuit fault — consult service information and consider ECM bench test/replacement

Likely causes

  • Damaged/loose connector at IAT sensor
  • Frayed or intermittent wiring (chafe/wire break) between sensor and ECM
  • Failing IAT sensor element (internal intermittent)
  • Corrosion or poor contact at mating connector pins
  • ECM input/ground problem (less common)

Fault status

⚠️ Status
Intermittent fault reported in Intake Air Temperature Sensor 1 circuit (Bank 1). ECM detected an unstable/open/short/erratic IAT signal condition; fault set intermittently rather than continuously.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

Similar codes

P0113 P0112 P0115 P0118 P0102 P0103
Repair manuals

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Code

P0114

LAND ROVER P — Powertrain

Intake Air Temperature Sensor 1 - Circuit

Brand: LAND ROVER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Corroded, loose, or damaged IAT sensor connector or pins
  • Broken or chafed wiring harness between IAT sensor and ECM
  • Intermittent short to voltage or ground in the IAT circuit
  • Failed IAT sensor (thermistor intermittent)
  • Poor engine/ECM ground or reference voltage supply
  • Intermittent ECM input circuit fault or solder joint

Symptoms

  • Malfunction Indicator Lamp (MIL) may illuminate sporadically
  • Intermittent rough idle, hesitation or stumbling under load
  • Erratic fuel trim behavior, occasional increased fuel consumption
  • Difficult or inconsistent cold starts (possible)
  • No constant sensor reading for intake temperature on scan tool (fluctuating or dropping to open)

What to check

  • Scan tool: read IAT PID while engine cold to warm and observe for dropouts or erratic jumps
  • Check freeze frame / freeze data and frequency of fault occurrence
  • Visually inspect IAT sensor connector and wiring for damage, corrosion, or looseness
  • Backprobe connector and check reference voltage and signal with ignition ON/engine running
  • Measure sensor resistance at the harness connector (with sensor disconnected) and compare to expected thermistor behavior as temperature changes
  • Perform wiggle test on harness and connector while monitoring IAT PID/voltage for intermittent changes

Signal parameters

  • Sensor type: normally an NTC thermistor (resistance decreases as temp rises)
  • Expected signal voltage: typically in the 0.1–4.9 V range depending on intake temp and vehicle design
  • Typical resistance at ~20°C: on many vehicles roughly 1–10 kΩ (varies by manufacturer)
  • Open-circuit: signal voltage often near reference supply (or diagnostic tool shows OL/infinite resistance)
  • Short to ground: signal voltage near 0 V; short to battery: signal near reference voltage (~5 V)

Diagnostic algorithm

  1. Retrieve freeze frame and clear code; attempt to recreate fault by cycling ignition/engine and monitor IAT PID for intermittent behavior
  2. Visually inspect sensor, connector, and wiring harness; repair visible damage, corrosion, or bent pins
  3. Backprobe IAT connector: with ignition ON measure reference voltage (if applicable) and signal voltage while varying intake air temperature (or blow air/cold spray) — signal should move smoothly
  4. Measure sensor resistance at sensor leads (disconnect sensor). Compare to a known thermistor resistance vs temperature chart for the vehicle or general NTC behavior. Replace sensor if values are out of expected range or erratic
  5. Perform continuity/resistance check from sensor connector to ECM input pin; wiggle harness to look for intermittent opens
  6. If intermittent voltage spikes or noise are seen, inspect/repair grounds and any shielding; install/repair grounds as needed
  7. If wiring and sensor test good but intermittent signal persists, swap/replace the IAT sensor with a known-good unit and retest
  8. If intermittent persists after harness and sensor replacement, consider ECM input circuit fault — consult service information and consider ECM bench test/replacement

Likely causes

  • Damaged/loose connector at IAT sensor
  • Frayed or intermittent wiring (chafe/wire break) between sensor and ECM
  • Failing IAT sensor element (internal intermittent)
  • Corrosion or poor contact at mating connector pins
  • ECM input/ground problem (less common)

Fault status

⚠️ Status
Intermittent fault reported in Intake Air Temperature Sensor 1 circuit (Bank 1). ECM detected an unstable/open/short/erratic IAT signal condition; fault set intermittently rather than continuously.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2 hours

Similar codes

P0113 P0112 P0115 P0118 P0102 P0103
320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

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