Code
C1703
LAND ROVER
C — Chassis
Rear right corner sensor - circuit malfunction
Views:
UK: 8
EN: 13
RU: 10
AI status
Completed
Completed
100%
Causes
- Open circuit in sensor wiring (broken wire, damaged harness)
- Short to ground or short to battery (signal wire shorted)
- Corroded or loose connector at sensor or module
- Failed rear right corner sensor (height/position/range sensor)
- Water intrusion or contamination at connector or sensor
- Poor ground or supply voltage to sensor
Symptoms
- Suspension warning light or service message on dash
- Vehicle may not self-level or rear right corner ride height incorrect
- ABS/ESP/traction warnings may appear on some vehicles if systems share sensors
- Stored C1703 code and possibly related codes
- Intermittent or constant fault depending on wiring condition
What to check
- Retrieve fault code and freeze frame/live data with a capable scan tool
- Visually inspect rear right corner sensor, mounting, wiring harness and connector for damage, corrosion, pin push-out or water ingress
- Perform wiggle test on harness and connector while monitoring live signal to reproduce fault
- Check fuses and power/ground circuits for the suspension control module
- Compare live sensor voltage/position data between corners if scan tool supports it
- Inspect nearby components (sway bar, axle, wheel bearing) for anything that could damage wiring
Signal parameters
- Typical reference/supply voltage: ~5 V (manufacturer-specific)
- Signal voltage: varies with sensor position (approx. 0.5–4.5 V typical range)
- Sensor impedance: varies by design (often in the kilo-ohm range)
- Open circuit: infinite resistance / no signal; short to ground: ~0 V; short to battery: ~battery voltage (12 V) — actual values depend on model
Diagnostic algorithm
- Read and record DTCs and freeze frame data with a diagnostic scanner; note any stored related codes.
- Visually inspect the rear right sensor, mounting, wiring and connector for damage, corrosion, dirt or water. Repair any obvious damage.
- With ignition on (follow vehicle safety/service manual), monitor live sensor data or measure reference and signal voltages at the sensor connector. Expect a stable reference supply and a variable signal as the suspension position changes.
- Perform a wiggle/movement test of the harness and connector while watching live data to catch intermittent faults.
- Check continuity between the sensor connector and the suspension control module for signal, reference and ground. Repair any open/shorted conductors.
- If wiring and connectors are good, swap the rear right sensor with another corner sensor (if identical) and see if the code follows the sensor to confirm sensor failure.
- If sensor swap indicates a good sensor, inspect and test the module side (connector pins, module power/ground). Replace or reprogram module only after confirming wiring and sensor are OK.
- After repair, clear codes and test drive or cycle suspension to confirm the fault does not return.
Likely causes
- Damaged wiring or connector at the rear right corner (most common)
- Corroded/contaminated connector allowing intermittent contact
- Failed height/position sensor at rear right corner
- Water ingress around sensor or connector
Fault status
Status
Suspension control module reports circuit malfunction for the rear right corner height/position sensor.
Repair difficulty: Medium
Diagnostic time: 0.5-2.5 hours
Similar codes
Workshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
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Code
C1703
Other
C — Chassis
Right Rear Sensor Circuit Failure
Views:
UK: 19
EN: 43
RU: 26
AI status
Completed
Completed
100%
Causes
- Open circuit in sensor wiring (broken wire, damaged harness)
- Short to ground or short to battery (signal wire shorted)
- Corroded or loose connector at sensor or module
- Failed rear right corner sensor (height/position/range sensor)
- Water intrusion or contamination at connector or sensor
- Poor ground or supply voltage to sensor
Symptoms
- Suspension warning light or service message on dash
- Vehicle may not self-level or rear right corner ride height incorrect
- ABS/ESP/traction warnings may appear on some vehicles if systems share sensors
- Stored C1703 code and possibly related codes
- Intermittent or constant fault depending on wiring condition
What to check
- Retrieve fault code and freeze frame/live data with a capable scan tool
- Visually inspect rear right corner sensor, mounting, wiring harness and connector for damage, corrosion, pin push-out or water ingress
- Perform wiggle test on harness and connector while monitoring live signal to reproduce fault
- Check fuses and power/ground circuits for the suspension control module
- Compare live sensor voltage/position data between corners if scan tool supports it
- Inspect nearby components (sway bar, axle, wheel bearing) for anything that could damage wiring
Signal parameters
- Typical reference/supply voltage: ~5 V (manufacturer-specific)
- Signal voltage: varies with sensor position (approx. 0.5–4.5 V typical range)
- Sensor impedance: varies by design (often in the kilo-ohm range)
- Open circuit: infinite resistance / no signal; short to ground: ~0 V; short to battery: ~battery voltage (12 V) — actual values depend on model
Diagnostic algorithm
- Read and record DTCs and freeze frame data with a diagnostic scanner; note any stored related codes.
- Visually inspect the rear right sensor, mounting, wiring and connector for damage, corrosion, dirt or water. Repair any obvious damage.
- With ignition on (follow vehicle safety/service manual), monitor live sensor data or measure reference and signal voltages at the sensor connector. Expect a stable reference supply and a variable signal as the suspension position changes.
- Perform a wiggle/movement test of the harness and connector while watching live data to catch intermittent faults.
- Check continuity between the sensor connector and the suspension control module for signal, reference and ground. Repair any open/shorted conductors.
- If wiring and connectors are good, swap the rear right sensor with another corner sensor (if identical) and see if the code follows the sensor to confirm sensor failure.
- If sensor swap indicates a good sensor, inspect and test the module side (connector pins, module power/ground). Replace or reprogram module only after confirming wiring and sensor are OK.
- After repair, clear codes and test drive or cycle suspension to confirm the fault does not return.
Likely causes
- Damaged wiring or connector at the rear right corner (most common)
- Corroded/contaminated connector allowing intermittent contact
- Failed height/position sensor at rear right corner
- Water ingress around sensor or connector
Fault status
Status
Suspension control module reports circuit malfunction for the rear right corner height/position sensor.
Repair difficulty: Medium
Diagnostic time: 0.5-2.5 hours
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Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
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Your experience will help others
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Was this AI description helpful?
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