Code
C0062
HYUNDAI
C — Chassis
Longitudinal Acceleration Sensor (Subfault)
Views:
UK: 18
EN: 61
RU: 28
AI status
Completed
Completed
100%
Causes
- Failed or degraded longitudinal acceleration sensor (internal fault)
- Loose, corroded or disconnected sensor connector
- Damaged wiring harness (open, short to power/ground, chafing)
- Water ingress or contamination at the sensor or connector
- Incorrect sensor mounting or loose bracket (poor reference)
- Control module (ABS/ESC) internal fault or software error
Symptoms
- ABS/ESC/Traction Control warning lamp illuminated
- Stability control and/or traction control functions reduced or disabled
- Stored C0062 (and possibly related) DTC(s) in ABS/ESC module
- Possible degraded braking/stability intervention behavior in dynamic conditions
- No engine starting symptom specifically caused by this code (engine may run normally)
What to check
- Read ABS/ESC module codes and freeze-frame data with a dealer-level scanner
- Check for additional related DTCs (yaw rate, lateral accel, CAN communication faults)
- Visual inspection: sensor mounting, connectors, wiring harness for damage, corrosion, water entry
- Verify battery and charging voltage stable during test (typically 12–14.5 V)
- Wiggle-test harness/connectors while monitoring live sensor data to reproduce fault
- Check for service procedures: sensor calibration/initialization required after replacement or suspension work
Signal parameters
- Sensor reports longitudinal acceleration (g or m/s²) via local bus or analog output — at rest the value should be near 0 g (±0.1 g)
- If analog type: many sensors use a mid-rail reference (≈2.5 V) at 0 g and vary up/down with acceleration (model dependent)
- If CAN/LIN: live data should show stable near-zero longitudinal acceleration at rest and change smoothly with vehicle movement
- Look for intermittent drops to implausible values, stuck values, or loss of message on the bus
Diagnostic algorithm
- Connect a capable scan tool and retrieve all ABS/ESC/airbag/communications codes and freeze frame data
- Confirm vehicle battery voltage is within spec; recharge if low before continuing
- Visually inspect the longitudinal acceleration sensor, its mounting, and connector for corrosion, water, or damage
- Secure connectors and inspect pins—repair or replace corroded pins/wiring as needed
- With scan tool, monitor live longitudinal acceleration signal while performing a wiggle test on harness and connector to reproduce fault
- If analog output present, measure reference, supply, and signal voltages at the sensor connector per manufacturer procedures; compare to expected values
- If CAN/LIN, monitor bus messages to confirm sensor messages are present and valid; check for bus errors or lost communication (use scope or CAN sniffer if available)
- Check continuity and resistance of wires between sensor and ABS/ESC module; repair any opens/shorts
- If wiring and connector OK but fault persists, perform sensor calibration/initialization as specified by manufacturer, then road test
- If fault remains after calibration and wiring checks, replace the longitudinal acceleration sensor and repeat initialization and road test
- If replacement does not clear the fault, inspect/replace ABS/ESC control module or investigate broader communication faults (dealer-level diagnostics may be required)
Likely causes
- Damaged sensor or internal electronics
- Corroded/loose connector at the sensor
- Open or short in the sensor signal/power wiring harness
- Sensor mounting loose or physically displaced
- ABS/ESC control module communication fault
Fault status
Status
Longitudinal acceleration sensor subfault detected. Check sensor, wiring, and module communications; stability control may be affected.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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