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Home / DTC / U2104 — Meter reset button shot

U2104 — Meter reset button shot

Detailed page for trouble code U2104.

34,405codes
59brands
11,914generic
22,491specific
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Code

U2104

LAND ROVER U — Network/User

Meter reset button shot

Brand: LAND ROVER
Type: U — Network/User
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Failed or mechanically damaged meter reset (trip) button/switch
  • Broken, shorted, or chafed wiring in the switch circuit
  • Corroded or loose connector at the instrument cluster or steering column
  • Water ingress or contamination around the switch or connector
  • Faulty instrument cluster input circuit or internal switch interface
  • Intermittent ground or supply voltage problems

Symptoms

  • U2104 stored in instrument cluster or gateway module
  • Meter/trip reset button does not respond or is intermittently nonfunctional
  • Inability to reset trip/Mileage/time functions via button
  • Other instrument cluster anomalies (flicker, errors) or related communication DTCs
  • Possible illumination of a general warning or message about instrument faults
  • Occasional sporadic resets or unexpected gauge behavior

What to check

  • Verify DTC with a capable diagnostic tool and note freeze frame / occurrence count
  • Perform a visual inspection of the meter reset button, switch area and wiring harness (look for damage, corrosion, water ingress)
  • Wiggle the switch and harness while monitoring live data/DTCs to reproduce the fault
  • Inspect connectors at the instrument cluster and steering column; reseat and inspect pins
  • Check vehicle battery voltage and grounds for proper connection and corrosion
  • Scan for other communication-related U-codes on CAN networks (gateway, modules)

Signal parameters

  • Switch type: typically a momentary contact to ground or to a reference input; closed ≈ 0 Ω, open ≈ high resistance (>>kΩ)
  • Expected cluster input: stable reference voltage or pulled-up logic level when open, pulls to ground when pressed
  • CAN bus idle voltage (for reference): CAN high ≈ 2.5V, CAN low ≈ 2.5V (differential idle ~0V with dominant/recessive states) — verify with vehicle-specific values
  • Noisy or missing messages on the CAN network when fault occurs (use a scope or capable scan tool)
  • Continuity and resistance of switch circuit should be stable and repeatable when operated

Diagnostic algorithm

  1. Read and record U2104 and any other related DTCs with a manufacturer-capable scan tool. Note occurrence history and freeze frame data.
  2. Perform basic checks: battery voltage, module power/ground integrity, and inspect for corrosion or water entry near the switch and connectors.
  3. Visually inspect the meter reset button for mechanical damage. Operate the button while watching live data or the instrument cluster response.
  4. Disconnect the connector at the switch (if serviceable) and check continuity to the instrument cluster pin. With switch removed, measure open-circuit and closed-circuit resistance (expect near 0 Ω closed).
  5. Backprobe the cluster input pin with a multimeter/oscilloscope. Verify expected reference voltage when switch is open and that it changes reliably when switch is operated.
  6. Wiggle test wiring from switch to cluster while monitoring DTCs and live data to detect intermittent faults. Inspect harness for chafing or pin damage.
  7. If wiring and switch test good, test with a known-good replacement switch or jumper the circuit per vehicle wiring diagram to simulate switch operation (observe safety and manufacturer instructions).
  8. If the input remains invalid with good switch/wiring, suspect instrument cluster input circuitry. Check for related module communication faults and try reprogramming/firmware update if available.
  9. After repairs, clear codes and perform functional test. Re-scan to confirm U2104 does not return under normal operation and after road or drive-cycle testing.

Likely causes

  • Meter reset switch contact failure (most common)
  • Open or short in the switch harness near the steering column
  • Connector corrosion at the cluster or switch assembly
  • Instrument cluster internal input/output circuit fault
  • Intermittent body/circuit ground causing erratic signal

Fault status

⚠️ Status
Instrument cluster meter reset switch input fault detected (invalid/stuck/missing signal). Check switch, wiring, connector, and cluster input circuit; may be intermittent.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.5 hours

Similar codes

U0100 U0155 U0140 U0121 U2101 U2140
320

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