Code
C1425
LAND ROVER
C — Chassis
Right rear shock absorber - short circuit to battery
Views:
UK: 8
EN: 11
RU: 9
AI status
Completed
Completed
100%
Causes
- Damaged/abraded wiring harness to right‑rear shock (insulation worn through contacting chassis)
- Corroded or pushed‑out connector pins allowing battery feed to contact signal line
- Shorted shock absorber actuator (internal short to battery)
- Faulty suspension control module (internal short or stuck output)
- Water ingress or debris in connector causing conductive path to battery
- Incorrect repair or aftermarket wiring tapped into circuit
Symptoms
- Suspension warning lamp/message on instrument cluster
- Right‑rear damper stuck at one setting or no active damping control
- Reduced ride quality or harsh/soft ride at rear right corner
- Adaptive suspension system disabled or limited functionality
- Related stored faults for suspension or CAN communications
What to check
- Read freeze‑frame and full fault list with a diagnostic tool; record live data
- Visually inspect right‑rear shock connector and wiring along its routing for damage, pin corrosion, or water ingress
- With ignition off, disconnect right‑rear shock connector and inspect pins for corrosion, bent pins, or melting
- Check fuses and relays for the suspension/suspension control module circuits
- Measure voltage at the right‑rear shock connector (harness side) with ignition ON and connector disconnected — check for unwanted battery voltage (~12V)
- Check for continuity between the circuit positive and battery positive (with ignition off) to confirm a short to battery
Signal parameters
- Battery voltage present on supply lines ≈ 12–14 V when system powered
- When circuit is healthy and controller not commanding, the right‑rear actuator circuit should not be held at battery voltage; an unexpected steady 12 V indicates a short to battery
- Actuator coil/valve resistance is typically low (compare measured ohms to manufacturer's spec or a known‑good unit)
- When commanded, controller may use PWM/duty‑cycle control; confirm presence/absence of PWM on the line only when module commands the actuator
Diagnostic algorithm
- Read and record DTCs and live data with a suitable diagnostic tool; note any related U‑codes.
- Visually inspect right‑rear shock, connector and harness routing for obvious damage, corrosion, or water entry.
- Clear the code, perform a road/operation test to see if code returns and capture live data while tests are performed.
- With ignition OFF, disconnect the right‑rear shock connector. Visually inspect pins and backprobe the harness connector (vehicle side) with ignition ON: measure voltage to ground. If ~12 V is present with connector disconnected, suspect wiring short or module output stuck.
- If no battery voltage at harness with connector disconnected, measure at the shock unit side. If battery voltage is present only at the shock side, the actuator is shorted and likely requires replacement.
- Check continuity between the affected circuit and battery positive with ignition OFF to confirm solid short. If continuity exists, isolate sections of harness (follow wiring diagram) and disconnect intermediate connectors to localize the short.
- If wiring and connector check OK, test the actuator resistance against specification or swap with a known‑good shock (if identical) to confirm actuator failure.
- If actuator and wiring are good, test the suspension control module outputs and grounds. Replace or reprogram module only after confirming wiring and actuator integrity.
- After repairs, clear codes, perform functional tests and a short road test to confirm fault does not return.
Likely causes
- Wiring chafe at suspension/axle rubbing through insulation
- Corroded right‑rear shock connector allowing positive feed to short
- Defective right‑rear shock actuator with internal short
- Faulty suspension control module output for right‑rear channel
Fault status
Status
Right‑rear shock absorber circuit: short to battery detected. Diagnostic trouble code stored. Inspect wiring, connector, and shock actuator for short to 12V before replacing control module.
Repair difficulty: Medium
Diagnostic time: 1.0 - 3.0 hours
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Code
C1425
Other
C — Chassis
Damper RR Circuit Short to Ground
Views:
UK: 11
EN: 21
RU: 17
AI status
Completed
Completed
100%
Causes
- Damaged/abraded wiring harness to right‑rear shock (insulation worn through contacting chassis)
- Corroded or pushed‑out connector pins allowing battery feed to contact signal line
- Shorted shock absorber actuator (internal short to battery)
- Faulty suspension control module (internal short or stuck output)
- Water ingress or debris in connector causing conductive path to battery
- Incorrect repair or aftermarket wiring tapped into circuit
Symptoms
- Suspension warning lamp/message on instrument cluster
- Right‑rear damper stuck at one setting or no active damping control
- Reduced ride quality or harsh/soft ride at rear right corner
- Adaptive suspension system disabled or limited functionality
- Related stored faults for suspension or CAN communications
What to check
- Read freeze‑frame and full fault list with a diagnostic tool; record live data
- Visually inspect right‑rear shock connector and wiring along its routing for damage, pin corrosion, or water ingress
- With ignition off, disconnect right‑rear shock connector and inspect pins for corrosion, bent pins, or melting
- Check fuses and relays for the suspension/suspension control module circuits
- Measure voltage at the right‑rear shock connector (harness side) with ignition ON and connector disconnected — check for unwanted battery voltage (~12V)
- Check for continuity between the circuit positive and battery positive (with ignition off) to confirm a short to battery
Signal parameters
- Battery voltage present on supply lines ≈ 12–14 V when system powered
- When circuit is healthy and controller not commanding, the right‑rear actuator circuit should not be held at battery voltage; an unexpected steady 12 V indicates a short to battery
- Actuator coil/valve resistance is typically low (compare measured ohms to manufacturer's spec or a known‑good unit)
- When commanded, controller may use PWM/duty‑cycle control; confirm presence/absence of PWM on the line only when module commands the actuator
Diagnostic algorithm
- Read and record DTCs and live data with a suitable diagnostic tool; note any related U‑codes.
- Visually inspect right‑rear shock, connector and harness routing for obvious damage, corrosion, or water entry.
- Clear the code, perform a road/operation test to see if code returns and capture live data while tests are performed.
- With ignition OFF, disconnect the right‑rear shock connector. Visually inspect pins and backprobe the harness connector (vehicle side) with ignition ON: measure voltage to ground. If ~12 V is present with connector disconnected, suspect wiring short or module output stuck.
- If no battery voltage at harness with connector disconnected, measure at the shock unit side. If battery voltage is present only at the shock side, the actuator is shorted and likely requires replacement.
- Check continuity between the affected circuit and battery positive with ignition OFF to confirm solid short. If continuity exists, isolate sections of harness (follow wiring diagram) and disconnect intermediate connectors to localize the short.
- If wiring and connector check OK, test the actuator resistance against specification or swap with a known‑good shock (if identical) to confirm actuator failure.
- If actuator and wiring are good, test the suspension control module outputs and grounds. Replace or reprogram module only after confirming wiring and actuator integrity.
- After repairs, clear codes, perform functional tests and a short road test to confirm fault does not return.
Likely causes
- Wiring chafe at suspension/axle rubbing through insulation
- Corroded right‑rear shock connector allowing positive feed to short
- Defective right‑rear shock actuator with internal short
- Faulty suspension control module output for right‑rear channel
Fault status
Status
Right‑rear shock absorber circuit: short to battery detected. Diagnostic trouble code stored. Inspect wiring, connector, and shock actuator for short to 12V before replacing control module.
Repair difficulty: Medium
Diagnostic time: 1.0 - 3.0 hours
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