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Home / DTC / B2355 — Driver Front Vertical Sensor Malfunction

B2355 — Driver Front Vertical Sensor Malfunction

Detailed page for trouble code B2355.

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Code

B2355

HUMMER B — Body

Driver Front Vertical Sensor Malfunction

Brand: HUMMER
Type: B — Body
Views: UK: 11 EN: 12 RU: 9
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Failed or degraded driver front vertical sensor
  • Damaged, corroded or loose electrical connector at the sensor
  • Broken, chafed or shorted wiring between sensor and control module
  • Contaminated or mechanically bound sensor linkage or mounting
  • Missing or poor ground or reference voltage to the sensor
  • Faulty body/suspension control module or software/firmware issue

Symptoms

  • Suspension/leveling warning lamp or message on instrument cluster
  • Vehicle may not auto‑level or maintain ride height
  • Ride height asymmetry or sag at the front driver side
  • Reduced suspension performance or faulted adaptive damping
  • DTC stored for the front vertical sensor; related codes may appear
  • Possible drivetrain or stability warnings if height data used by other systems

What to check

  • Retrieve and record all stored codes and freeze/frame data with a scan tool
  • Perform a visual inspection of the driver front vertical sensor, linkage and mounting
  • Inspect sensor connector for corrosion, bent pins, moisture or loose terminals
  • Check wiring harness for chafing, breaks, pinch points and connector seals
  • Using a scan tool, monitor the live data value for the front driver vertical sensor while moving the suspension
  • Verify reference voltage and ground at the sensor connector with the ignition on

Signal parameters

  • Reference voltage: typically ~5 V (verify factory specification)
  • Signal type: analog voltage (commonly 0.5–4.5 V proportional to travel) or digital/pulse depending on sensor design
  • Ground continuity between sensor ground pin and chassis ground
  • Live data should change smoothly and proportionally as suspension travel is moved
  • No open circuits (< specified ohms) or short to battery/ground on signal/return wiring

Diagnostic algorithm

  1. Connect a compatible scan tool, read and record all codes and live data. Note freeze frame conditions.
  2. Visually inspect the sensor, linkage and connector for physical damage, contamination or binding. Repair any mechanical faults.
  3. With ignition ON, backprobe the sensor connector: verify reference voltage, signal voltage and ground. Compare values to expected ranges in service literature.
  4. Move the suspension or manually operate the linkage while watching live data. Signal should vary smoothly; erratic/no change indicates sensor or wiring fault.
  5. Perform continuity and resistance checks on the signal and ground wires between the sensor connector and the control module. Repair any open/short circuits.
  6. If wiring and connector are good, substitute a known‑good sensor (if available) or bench/test the suspect sensor per factory procedure.
  7. If a new sensor is installed, perform any required calibration/initialization or relearn procedures specified by the manufacturer.
  8. Clear codes and perform a road or static test to verify the repair. Re-scan to confirm the code does not return.
  9. If fault persists with a verified sensor and wiring, consider control module diagnostics or software updates per dealer procedures.

Likely causes

  • Water intrusion or corrosion at the sensor connector
  • Wiring harness abrasion or connector pin damage from road debris
  • Sensor pivot seized or linkage bent preventing proper movement
  • Intermittent wiring/connector causing open or short
  • Sensor internal electronics failure

Fault status

⚠️ Status
Driver Front Vertical Sensor Malfunction — position/height sensor for front driver side reporting invalid or out-of-range signal to control module.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B2350 B2351 B2352 B2353 B2354 B2356
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Code

B2355

Other B — Body

Passenger Mirror Horizontal / Vertical Feedback Potentiometer Circuit Open

Brand: Other
Type: B — Body
Views: UK: 15 EN: 24 RU: 17
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Failed or degraded driver front vertical sensor
  • Damaged, corroded or loose electrical connector at the sensor
  • Broken, chafed or shorted wiring between sensor and control module
  • Contaminated or mechanically bound sensor linkage or mounting
  • Missing or poor ground or reference voltage to the sensor
  • Faulty body/suspension control module or software/firmware issue

Symptoms

  • Suspension/leveling warning lamp or message on instrument cluster
  • Vehicle may not auto‑level or maintain ride height
  • Ride height asymmetry or sag at the front driver side
  • Reduced suspension performance or faulted adaptive damping
  • DTC stored for the front vertical sensor; related codes may appear
  • Possible drivetrain or stability warnings if height data used by other systems

What to check

  • Retrieve and record all stored codes and freeze/frame data with a scan tool
  • Perform a visual inspection of the driver front vertical sensor, linkage and mounting
  • Inspect sensor connector for corrosion, bent pins, moisture or loose terminals
  • Check wiring harness for chafing, breaks, pinch points and connector seals
  • Using a scan tool, monitor the live data value for the front driver vertical sensor while moving the suspension
  • Verify reference voltage and ground at the sensor connector with the ignition on

Signal parameters

  • Reference voltage: typically ~5 V (verify factory specification)
  • Signal type: analog voltage (commonly 0.5–4.5 V proportional to travel) or digital/pulse depending on sensor design
  • Ground continuity between sensor ground pin and chassis ground
  • Live data should change smoothly and proportionally as suspension travel is moved
  • No open circuits (< specified ohms) or short to battery/ground on signal/return wiring

Diagnostic algorithm

  1. Connect a compatible scan tool, read and record all codes and live data. Note freeze frame conditions.
  2. Visually inspect the sensor, linkage and connector for physical damage, contamination or binding. Repair any mechanical faults.
  3. With ignition ON, backprobe the sensor connector: verify reference voltage, signal voltage and ground. Compare values to expected ranges in service literature.
  4. Move the suspension or manually operate the linkage while watching live data. Signal should vary smoothly; erratic/no change indicates sensor or wiring fault.
  5. Perform continuity and resistance checks on the signal and ground wires between the sensor connector and the control module. Repair any open/short circuits.
  6. If wiring and connector are good, substitute a known‑good sensor (if available) or bench/test the suspect sensor per factory procedure.
  7. If a new sensor is installed, perform any required calibration/initialization or relearn procedures specified by the manufacturer.
  8. Clear codes and perform a road or static test to verify the repair. Re-scan to confirm the code does not return.
  9. If fault persists with a verified sensor and wiring, consider control module diagnostics or software updates per dealer procedures.

Likely causes

  • Water intrusion or corrosion at the sensor connector
  • Wiring harness abrasion or connector pin damage from road debris
  • Sensor pivot seized or linkage bent preventing proper movement
  • Intermittent wiring/connector causing open or short
  • Sensor internal electronics failure

Fault status

⚠️ Status
Driver Front Vertical Sensor Malfunction — position/height sensor for front driver side reporting invalid or out-of-range signal to control module.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B2350 B2351 B2352 B2353 B2354 B2356
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