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Home / DTC / C1699 — Left rear corner sensor - short circuit to battery

C1699 — Left rear corner sensor - short circuit to battery

Detailed page for trouble code C1699.

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Code

C1699

LAND ROVER C — Chassis

Left rear corner sensor - short circuit to battery

Brand: LAND ROVER
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Chafed or damaged wiring harness contacting battery positive or another live circuit
  • Corroded, contaminated or water-damaged connector at the left rear corner sensor
  • Internal short inside the left rear corner sensor (internal B+ short)
  • Pin pushed out of connector or terminal making contact with live conductor
  • Improper previous repair or aftermarket modification that tied the circuit to battery
  • Faulty control module (less common)

Symptoms

  • ABS/DSC/suspension/air suspension warning lamp illuminated
  • Left rear corner sensor fault stored in control module (C1699)
  • Vehicle leveling or ride-height incorrect at left rear (sagging or not leveling)
  • Intermittent or permanent loss of related system function (ride control, stability assist)
  • Fault persists after power cycle or occurs under chassis movement (wheel travel)

What to check

  • Retrieve full freeze-frame and live data; note when the fault sets (ignition, driving, jacking vehicle)
  • Visually inspect left rear sensor, connector and harness for damage, corrosion, water ingress, broken clips or rubbing points
  • Disconnect left rear corner sensor connector and check whether the code is still present (helps isolate sensor vs. wiring/module)
  • Backprobe the sensor connector with ignition ON and measure voltage on signal/power pins — check for battery voltage on any signal pin (should not be equal to B+)
  • Measure continuity between the sensor signal/power pin and battery positive to confirm a short (low resistance indicates short)
  • Inspect grounds and the control module connector feeding the circuit; measure for correct ground continuity

Signal parameters

  • Expected: signal line should NOT be tied to battery voltage. Typical sensor output is a low-voltage signal or variable resistance (commonly 0–5 V or varying ohms depending on sensor type)
  • Short condition: signal/power pin measures approximately battery voltage (~12 V with ignition on or battery voltage when key off)
  • Open/normal resistance: sensor wiring to module should show several ohms to kilo-ohms depending on sensor type — consult service manual for exact values
  • Always refer to the manufacturer's wiring diagram and sensor specification for exact voltages/resistances

Diagnostic algorithm

  1. Read and record all related codes and freeze-frame data using a dedicated scan tool
  2. Perform visual inspection of left rear sensor, connector and harness for obvious damage; repair obvious wiring damage and re-check
  3. Clear codes, then disconnect the left rear corner sensor connector and attempt to reproduce or re-scan for the code
  4. Backprobe connector with ignition ON: measure voltage on each pin. If any signal/power pin reads battery voltage, suspect short to B+ in harness or connector
  5. If battery voltage present at disconnected connector, trace harness toward the front/body using wiring diagram; isolate sections and look for continuity to B+
  6. Wiggle harness along routing while monitoring voltage/continuity to reproduce intermittent shorts (lift or lower suspension if safe to do so)
  7. If no battery voltage at disconnected connector, reconnect sensor and measure at control module connector to determine if short exists between module and harness/connector
  8. If the sensor is suspected, substitute a known-good sensor or bench-test the removed sensor per manufacturer procedure
  9. Repair the identified wiring fault or replace the sensor/connector. Use proper crimps/terminals, corrosion protection and routing/retaining clips
  10. After repair, clear codes, perform relearn procedures if required, and road-test to confirm the fault does not return

Likely causes

  • Corroded/contaminated sensor connector at left rear (most common)
  • Harness damage near suspension, chassis rail or body panel where it flexes
  • Failed sensor with internal short
  • Damaged terminal/pin in connector allowing B+ contact

Fault status

⚠️ Status
C1699 — Left rear corner sensor circuit: short to battery (B+)
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

C1698 C1697 C1696 C1200
413

Browse 413 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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