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Home / DTC / B1352 — Circuit failure in insertion

B1352 — Circuit failure in insertion

Detailed page for trouble code B1352.

34,335codes
59brands
11,844generic
22,491specific
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Code

B1352

LAND ROVER B — Body

Circuit failure in insertion

Brand: LAND ROVER
Type: B — Body
AI status
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Page language: EN

Causes

  • Loose or incompletely seated connector at the related module or sensor
  • Damaged, corroded or bent connector terminals/pins
  • Broken or chafed wiring harness (open, short to ground, or short to battery)
  • Water/contaminant ingress into connector or module
  • Blown fuse or poor fuse/relay connection supplying the circuit
  • Faulty sensor, switch or control module

Symptoms

  • Malfunction or inoperative behavior of the related system or component
  • Warning light or message related to the affected system may be displayed
  • Intermittent faults that appear/disappear with vibration or connector movement
  • DTC B1352 stored in the vehicle's fault memory
  • Possible loss of functionality after connector removal/reinstallation

What to check

  • Read and record all stored DTCs and freeze-frame data using a diagnostic scanner
  • Identify the control module and circuit related to B1352 using wiring diagrams
  • Visual inspection of connectors, seals and wiring for damage, corrosion or contamination
  • Verify connectors are fully engaged and locking tabs are intact
  • Check fuses and related power/ignition supplies for the circuit
  • Inspect nearby body grounds and measure continuity to chassis

Signal parameters

  • Supply voltage to the circuit: typically battery voltage (approx. 11–14 V) when key on
  • Signal voltage levels for sensor/switch circuits: typically 0–5 V or pulsed square wave
  • Continuity of the circuit: near 0 Ω for short runs, verify not open to infinity
  • Resistance to ground for insulated circuits: high resistance/OL (no short)
  • Ground integrity: low resistance to chassis (
  • Connector pin backprobe behavior: stable voltage without intermittent dropouts

Diagnostic algorithm

  1. Connect a diagnostic scan tool; read and record all DTCs, freeze-frame and live data. Note related modules and time stamps.
  2. Consult wiring diagram to identify exact pins, connector numbers and harness routing for the affected circuit.
  3. Visually inspect the connector(s) and harness for physical damage, corrosion, pin deformation, moisture, or signs of overheating. Reseal or replace if contaminated.
  4. With ignition on (as required), backprobe the connector and verify supply voltage, signal voltage and ground at the control module and at the device end. Compare to expected values.
  5. Perform continuity/resistance checks between the module pin and the connector/device pin with power removed. Wiggle harness to detect intermittent opens or shorts.
  6. Check fuses/relays and any intermediate junctions. Verify proper grounding at nearby body grounds.
  7. If a connector is loose or terminals are damaged, repair or replace the connector and/or terminals. Use OEM-style replacements and correct crimping/soldering procedures.
  8. If wiring shows internal breaks or shorts, repair the harness section or use splice/patch procedures per manufacturer guidelines.
  9. If wiring and connectors are good, consider replacing the sensor/switch or control module only after verifying bench or substitution test results.
  10. Clear codes, perform functional tests and road test to confirm repair. Re-scan to ensure B1352 does not reappear.

Likely causes

  • Connector not fully inserted during assembly or service
  • Oxidation/corrosion on connector terminals causing high resistance
  • Pin pushed out of connector housing or terminal spring failure
  • Wire broken close to the connector (internal break)
  • Ground connection at module or nearby body ground is loose or corroded
  • Module software or calibration fault less likely but possible

Fault status

⚠️ Status
DTC B1352 — Circuit failure in insertion. Stored when the control module detects an open/short/high-resistance or incorrect signal associated with a connector insertion or engagement event. Investigation should focus on connector seating, wiring integrity, power/ground supplies and the associated sensor or module.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1350 B1351 B1353 B1354 B13A0 U0100
320

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