C2160

Code

Generic C — Chassis

Suspension Height Sensor 'A' Circuit Malfunction

Brand: Generic

Type: C — Chassis

Views: UK: 22 EN: 26 RU: 15

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Open, short, or high-resistance wiring in the sensor circuit
Corroded, loose or contaminated connector at the sensor or module
Failed suspension height (level) sensor
Loss of reference voltage or ground to the sensor
Fault in the suspension control module / body control module input
Physical damage or contamination of the sensor linkage

Symptoms

Suspension/ride-height warning lamp or message
Vehicle ride height incorrect or not leveling
Adaptive suspension malfunction or degraded ride/handling
Intermittent or permanent loss of auto-leveling feature
Related fault codes present for other height sensors or suspension modules

What to check

Read and record stored/frozen DTCs and freeze-frame data with a scan tool
Visual inspection of sensor, linkage, wiring harness and connectors for damage or contamination
Back-probe sensor connector and check for reference voltage and ground
Measure sensor output voltage or resistance at rest and while moving linkage
Wiggle test harness/connector while observing live data for intermittent changes
Check for continuity and shorts to battery positive or ground in the sensor circuit

Signal parameters

Typical reference voltage to sensor: ~5.0 V (varies by vehicle)
Expected sensor output (analog): approximately 0.5–4.5 V across travel (manufacturer-specific)
Resistance-type sensors may vary; expect a smooth change in ohms with linkage movement
No open circuit (infinite ohms) or hard short to battery/ground under normal conditions
Sensor output should change smoothly when suspension is moved; abrupt jumps indicate fault or wiring problem

Diagnostic algorithm

Connect a scan tool, read and save all codes and freeze-frame data. Note whether code is current or intermittent.
Visually inspect sensor, linkage and wiring at the affected corner for damage, corrosion, pin deformation or contaminant ingress.
With ignition ON (engine off), back-probe the sensor connector: verify reference voltage (usually ~5 V), ground continuity, and that connector pins are secure.
Measure the sensor output voltage or resistance while moving the suspension linkage by hand or using a lift. Confirm output varies smoothly within expected range.
Perform a wiggle test of the harness and connector while watching live data for intermittent changes. Repair any wiring chafes or loose terminals found.
Check continuity of the sensor signal wire back to the suspension control module and verify there are no shorts to battery or ground.
If wiring and power/ground are good but the output is out of range or erratic, replace the height sensor and retest.
If a new sensor shows same fault, inspect and test the suspension control module input circuit. Check for related network or module codes and consult wiring diagrams for further module-level diagnostics.
After repairs, clear codes, perform any required calibration or relearn procedures for the height sensor/system, and verify the issue is resolved during a road/lift test.

Likely causes

Damaged wiring or chafed harness near suspension components
Moisture or corrosion at the sensor connector
Sensor has failed internally (stuck or out-of-range output)
Poor ground at sensor or control module
Connector pins pushed out or bent

Fault status

⚠️ Status

Suspension Height Sensor 'A' Circuit Malfunction — sensor output or circuit out of expected range or intermittent; check wiring, connector, sensor and module inputs.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours