B2345

Code

LAND ROVER B — Body

common open circuit in a positive reference of

Brand: LAND ROVER

Type: B — Body

Views: UK: 9 EN: 15 RU: 11

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Open or broken wiring in the positive reference supply circuit
Corroded, loose or damaged connector pins
Blown fuse or tripped fusible link supplying the reference
Intermittent connector contact due to contamination or bent pins
Faulty module or sensor pulling the reference circuit out of range
Aftermarket modifications or repairs that disturbed the wiring

Symptoms

Associated system inoperative or partially functional
Related warning lamp or message on dash
Stored DTC(s) and possible loss of communication with a module
Intermittent operation of the affected function
No measurable reference voltage at the suspected connector

What to check

Read freeze-frame and DTC data with a compatible scan tool; note related modules and network messages
Visually inspect wiring harnesses and connectors for damage, corrosion, pushed-out pins or poor repairs
Check relevant fuses and fusible links for continuity and correct rating
Back-probe the connector and measure reference voltage with ignition ON (do not short pins)
Perform continuity test from connector pin to the fuse/power source and to the supplying module
Wiggle test wiring while monitoring voltage to reproduce intermittent opens

Signal parameters

Expected reference voltage: typically ~5.0 V for logic reference or battery voltage (~12 V) for power supply — confirm with vehicle-specific data
Tolerance: ±0.2–0.5 V for 5 V references; ±1.0 V for battery-level supplies (vehicle-specific)
Stability: voltage should be steady with ignition ON and not drop to 0 V
Current draw: normally low for a reference line; abnormal high or short to ground indicates fault

Diagnostic algorithm

Connect a compatible scan tool and confirm B2345 and any related DTCs. Record freeze-frame and module IDs.
Identify the circuit(s) and connector(s) referenced by manufacturer repair information for B2345.
Visually inspect the harness and connectors along the circuit path for damage, chafing, corrosion or poor repairs.
Check fuses and fusible links supplying the reference circuit; replace if blown and investigate cause of blow.
With ignition ON (engine off), back-probe the reference pin at the component connector and measure voltage. Compare to spec.
If voltage is absent or low, perform continuity check between the connector pin and the fuse/source. Repair any open/broken wires.
Perform wiggle/strain tests while monitoring voltage to locate intermittent breaks. Repair wiring harness or connector as needed.
If wiring and supply are confirmed good and within specification, suspect the control module or sensor. Confirm with substitution or module bench test per manufacturer procedures before replacement.
After repairs, clear codes, perform functional tests and road/operation test to confirm the fault does not return.

Likely causes

Disconnected or damaged harness connector at the affected control module
Blown or poor fuse/fusible link for the reference circuit
Broken wire where it flexes or passes through body panels/doors
Corrosion at connector terminals or pin pushed out of connector
Faulty control module or sensor internal to the system (after wiring verified)

Fault status

⚠️ Status

Open/high-resistance in positive reference supply — expected reference voltage missing or out of range

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

Repair manuals

Manual library for LAND ROVER

320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

Your experience will help others

+100 karma for a short comment :)

Was this AI description helpful?

Your feedback helps improve AI descriptions.

👍 Like 0 👎 Dislike 0

Send to email