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Home / DTC / B1144 — Right Front Impact Sensor Circuit Fault

B1144 — Right Front Impact Sensor Circuit Fault

Detailed page for trouble code B1144.

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Code

B1144

HUMMER B — Body

Right Front Impact Sensor Circuit Fault

Brand: HUMMER
Type: B — Body
Views: UK: 6 EN: 15 RU: 12
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged or chafed wiring in the right-front sensor harness
  • Corroded, loose or pushed-back connector terminals at the sensor or airbag control module
  • Short to ground or short to battery voltage in the sensor circuit
  • Failed right-front impact sensor (accelerometer/seat-mounted sensor)
  • Poor or missing ground for sensor circuit
  • Previous collision damage with incomplete repairs or connector contamination

Symptoms

  • SRS / airbag warning lamp illuminated on dash
  • Possible additional SRS-related DTCs stored (module or other sensors)
  • Airbag system may be disabled for affected circuits — vehicle shows reduced restraint readiness
  • No drivability symptoms (engine runs normally)

What to check

  • Read and record all stored SRS codes and freeze-frame data with a qualified scan tool
  • Verify the exact manufacturer battery disconnect and SRS disable procedure before beginning (follow service manual)
  • Visually inspect the right-front sensor, connector and harness for physical damage, corrosion or pinbacking
  • Check harness routing areas where flex or pinch could occur (seat tracks, door openings, body seams)
  • Inspect module and chassis ground points for corrosion, tightness and continuity
  • Perform wiggle test on harness and connector while observing scan tool live data or MIL (if safe and permitted by manufacturer procedures)

Signal parameters

  • Sensor type varies by model — may be analog (0–5 V) or digital (bussed/dedicated line). Typical behavior: open circuit → no signal/OL; short to ground → ~0 V; short to battery → near battery voltage
  • Normal idle sensor voltage typically between ~0.5–4.5 V for analog sensors (refer to factory values)
  • Resistance checks: harness continuity should be low ohms; open or very high ohms indicates break in circuit
  • CAN/LIN bus errors will appear as communication faults for digitally interfaced sensors

Diagnostic algorithm

  1. Follow manufacturer SRS safety procedure: disable SRS power (battery negative disconnect) and wait specified time before touching connectors/components
  2. Use a capable scan tool to: read/record codes, attempt module self-test, clear codes and perform a live-data/monitor while recreating fault conditions
  3. Visually inspect right-front impact sensor, mounting, connector and harness for damage, corrosion or water ingress; repair visible issues
  4. Backprobe the sensor connector with ignition ON (but SRS system not armed per manual) and compare voltages/continuity to factory specifications — check for open, short-to-ground or short-to-voltage
  5. Perform continuity checks from sensor connector to SRS module pins for feeds, returns and grounds; repair any open or high resistance circuits
  6. If harness and connectors check good, replace the right-front impact sensor with OEM or equivalent and clear codes
  7. After repairs, reconnect SRS power, re-enable system per factory procedure, re-scan and confirm no related DTCs and that the airbag lamp extinguishes after self-test
  8. If codes persist after sensor replacement and wiring verified, suspect SRS control module fault and follow manufacturer instructions for module diagnosis or replacement

Likely causes

  • Connector corrosion or bent terminals at the right-front sensor
  • Wiring damage where harness passes through door, seat base, or body panels
  • Failed impact sensor (most common after visual wiring checks)
  • Poor ground at sensor mounting or module ground stud

Fault status

⚠️ Status
Right Front Impact Sensor Circuit Fault — electrical fault detected in right-front impact sensor circuit (open/short/high resistance or sensor failure).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1140 B1142 B1143 B1145 B1160
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Code

B1144

LAND ROVER B — Body

Heated steering wheel supply Glove lock motor Passive anti-theft supply

Brand: LAND ROVER
Type: B — Body
Views: UK: 4 EN: 14 RU: 8
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged or chafed wiring in the right-front sensor harness
  • Corroded, loose or pushed-back connector terminals at the sensor or airbag control module
  • Short to ground or short to battery voltage in the sensor circuit
  • Failed right-front impact sensor (accelerometer/seat-mounted sensor)
  • Poor or missing ground for sensor circuit
  • Previous collision damage with incomplete repairs or connector contamination

Symptoms

  • SRS / airbag warning lamp illuminated on dash
  • Possible additional SRS-related DTCs stored (module or other sensors)
  • Airbag system may be disabled for affected circuits — vehicle shows reduced restraint readiness
  • No drivability symptoms (engine runs normally)

What to check

  • Read and record all stored SRS codes and freeze-frame data with a qualified scan tool
  • Verify the exact manufacturer battery disconnect and SRS disable procedure before beginning (follow service manual)
  • Visually inspect the right-front sensor, connector and harness for physical damage, corrosion or pinbacking
  • Check harness routing areas where flex or pinch could occur (seat tracks, door openings, body seams)
  • Inspect module and chassis ground points for corrosion, tightness and continuity
  • Perform wiggle test on harness and connector while observing scan tool live data or MIL (if safe and permitted by manufacturer procedures)

Signal parameters

  • Sensor type varies by model — may be analog (0–5 V) or digital (bussed/dedicated line). Typical behavior: open circuit → no signal/OL; short to ground → ~0 V; short to battery → near battery voltage
  • Normal idle sensor voltage typically between ~0.5–4.5 V for analog sensors (refer to factory values)
  • Resistance checks: harness continuity should be low ohms; open or very high ohms indicates break in circuit
  • CAN/LIN bus errors will appear as communication faults for digitally interfaced sensors

Diagnostic algorithm

  1. Follow manufacturer SRS safety procedure: disable SRS power (battery negative disconnect) and wait specified time before touching connectors/components
  2. Use a capable scan tool to: read/record codes, attempt module self-test, clear codes and perform a live-data/monitor while recreating fault conditions
  3. Visually inspect right-front impact sensor, mounting, connector and harness for damage, corrosion or water ingress; repair visible issues
  4. Backprobe the sensor connector with ignition ON (but SRS system not armed per manual) and compare voltages/continuity to factory specifications — check for open, short-to-ground or short-to-voltage
  5. Perform continuity checks from sensor connector to SRS module pins for feeds, returns and grounds; repair any open or high resistance circuits
  6. If harness and connectors check good, replace the right-front impact sensor with OEM or equivalent and clear codes
  7. After repairs, reconnect SRS power, re-enable system per factory procedure, re-scan and confirm no related DTCs and that the airbag lamp extinguishes after self-test
  8. If codes persist after sensor replacement and wiring verified, suspect SRS control module fault and follow manufacturer instructions for module diagnosis or replacement

Likely causes

  • Connector corrosion or bent terminals at the right-front sensor
  • Wiring damage where harness passes through door, seat base, or body panels
  • Failed impact sensor (most common after visual wiring checks)
  • Poor ground at sensor mounting or module ground stud

Fault status

⚠️ Status
Right Front Impact Sensor Circuit Fault — electrical fault detected in right-front impact sensor circuit (open/short/high resistance or sensor failure).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1140 B1142 B1143 B1145 B1160
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Key sections:
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  • 05 ENGINE TUNING DATA
  • 07 GENERAL FITTING REMINDERS
  • 09 LUBRICANTS, FLUIDS AND CAPACITIES
  • 10 MAINTENANCE
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Contents
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  • 1.6 Abbreviations
  • 1.7 HeVAC, sensors abbreviations
  • 1.8 How to use this document
  • 1.9 Connector detail format
  • 1.10 Fault diagnosis
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