Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / B2468 — Navigation Display Head (NDH) Malfunction

B2468 — Navigation Display Head (NDH) Malfunction

Detailed page for trouble code B2468.

34,311codes
59brands
11,820generic
22,491specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

B2468

HUMMER B — Body

Navigation Display Head (NDH) Malfunction

Brand: HUMMER
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • NDH (navigation/display head) internal failure
  • Loss of battery or ignition-switched power to the NDH
  • Open or high-resistance ground at NDH
  • Corroded/damaged connector or harness to NDH
  • Loss of communication on vehicle data bus (CAN/LIN)
  • Corrupted or outdated NDH software/firmware

Symptoms

  • Navigation display blank, black, or no backlight
  • Frozen or unresponsive touchscreen or buttons
  • Garbled or distorted graphics on display
  • Navigation functions unavailable or lost GPS guidance
  • Warning or error message about NDH or infotainment on display or instrument cluster
  • Loss of other infotainment features (radio, phone, vehicle settings) tied to the NDH

What to check

  • Read and record all stored DTCs and freeze-frame data with a full-function scan tool
  • Check for related communication trouble codes (U-codes, other B-codes)
  • Visually inspect NDH connectors and harness for corrosion, bent pins, or water intrusion
  • Verify fuses and fusible links for infotainment/NDH circuits
  • Measure battery and ignition-switched voltage at NDH power pins with key ON
  • Measure resistance to chassis ground from NDH ground pin(s) (should be low)

Signal parameters

  • Battery voltage to NDH (key ON): ~11–14.5 V
  • Ignition-switched supply present when key ON: ~11–14.5 V
  • Ground resistance at NDH ground:
  • CAN bus idle voltages: CANH ≈ 2.5 V, CANL ≈ 2.5 V (recessive); dominant pulses ~CANH 3.5 V / CANL 1.5 V
  • LIN bus idle: near battery voltage when idle; wake/reply pulses per OEM spec
  • Display backlight supply (if separate): check per OEM spec, typically ~12 V or specified low-voltage rail

Diagnostic algorithm

  1. Connect a factory-level or full-function scan tool. Read and save all codes and module presence list; note related U- and B-codes.
  2. Check battery voltage and health. Ensure battery is charged and connections are clean/tight.
  3. Inspect fuses and fusible links for the infotainment/NDH circuit; replace if blown and retest.
  4. Visually inspect NDH connectors and harness for corrosion, bent pins, moisture, or damage. Disconnect and reseat connectors; check pin condition.
  5. With key ON, measure power and ground at the NDH connector: verify battery/ignition supply and low ground resistance.
  6. Verify communication: confirm the NDH is present and responding on CAN/LIN with the scan tool. If module not present, check bus wiring and termination resistors.
  7. If intermittent comms, perform wiggle test of harnesses while monitoring signals/data. Repair any intermittent wiring or poor terminations.
  8. Check for related modules (BCM, radio module) reporting errors. Clear codes and see if B2468 returns; note whether permanent or history code.
  9. If hardware power/communication OK, attempt soft reset or factory reset of the NDH per OEM procedure; re-check operation.
  10. Check for available software/firmware updates or technical service bulletins (TSBs) for the NDH and apply per manufacturer instructions.
  11. If diagnostics point to internal NDH failure (confirmed absent communications, correct power/grounds, and updated software), replace the NDH module and program/configure as required. Recheck system and clear codes.
  12. After repair, verify operation of navigation, display, touchscreen, and related features; road test if needed.

Likely causes

  • Blown fuse or poor power supply to NDH
  • Intermittent or poor ground connection at NDH mounting point or harness
  • CAN or LIN bus fault (open, short to voltage/ground, or high resistance) preventing module comms
  • Software/firmware error requiring reflash or update
  • Internal display electronics failure (backlight, touchscreen controller, LCD)

Fault status

⚠️ Status
Navigation Display Head malfunction detected. Fault logged as B2468. Verify power, ground, and data-bus communications; check for software updates and perform module-level diagnostics before replacing the display head.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0 - 3.0 hours

Similar codes

B2460 B2461 B2470 U0100 U0073
Repair manuals

Manual library for HUMMER

138

Browse 138 HUMMER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

HUMMER

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

B2468

MITSUBISHI B — Body

Microphone input short to BATT

Brand: MITSUBISHI
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • NDH (navigation/display head) internal failure
  • Loss of battery or ignition-switched power to the NDH
  • Open or high-resistance ground at NDH
  • Corroded/damaged connector or harness to NDH
  • Loss of communication on vehicle data bus (CAN/LIN)
  • Corrupted or outdated NDH software/firmware

Symptoms

  • Navigation display blank, black, or no backlight
  • Frozen or unresponsive touchscreen or buttons
  • Garbled or distorted graphics on display
  • Navigation functions unavailable or lost GPS guidance
  • Warning or error message about NDH or infotainment on display or instrument cluster
  • Loss of other infotainment features (radio, phone, vehicle settings) tied to the NDH

What to check

  • Read and record all stored DTCs and freeze-frame data with a full-function scan tool
  • Check for related communication trouble codes (U-codes, other B-codes)
  • Visually inspect NDH connectors and harness for corrosion, bent pins, or water intrusion
  • Verify fuses and fusible links for infotainment/NDH circuits
  • Measure battery and ignition-switched voltage at NDH power pins with key ON
  • Measure resistance to chassis ground from NDH ground pin(s) (should be low)

Signal parameters

  • Battery voltage to NDH (key ON): ~11–14.5 V
  • Ignition-switched supply present when key ON: ~11–14.5 V
  • Ground resistance at NDH ground:
  • CAN bus idle voltages: CANH ≈ 2.5 V, CANL ≈ 2.5 V (recessive); dominant pulses ~CANH 3.5 V / CANL 1.5 V
  • LIN bus idle: near battery voltage when idle; wake/reply pulses per OEM spec
  • Display backlight supply (if separate): check per OEM spec, typically ~12 V or specified low-voltage rail

Diagnostic algorithm

  1. Connect a factory-level or full-function scan tool. Read and save all codes and module presence list; note related U- and B-codes.
  2. Check battery voltage and health. Ensure battery is charged and connections are clean/tight.
  3. Inspect fuses and fusible links for the infotainment/NDH circuit; replace if blown and retest.
  4. Visually inspect NDH connectors and harness for corrosion, bent pins, moisture, or damage. Disconnect and reseat connectors; check pin condition.
  5. With key ON, measure power and ground at the NDH connector: verify battery/ignition supply and low ground resistance.
  6. Verify communication: confirm the NDH is present and responding on CAN/LIN with the scan tool. If module not present, check bus wiring and termination resistors.
  7. If intermittent comms, perform wiggle test of harnesses while monitoring signals/data. Repair any intermittent wiring or poor terminations.
  8. Check for related modules (BCM, radio module) reporting errors. Clear codes and see if B2468 returns; note whether permanent or history code.
  9. If hardware power/communication OK, attempt soft reset or factory reset of the NDH per OEM procedure; re-check operation.
  10. Check for available software/firmware updates or technical service bulletins (TSBs) for the NDH and apply per manufacturer instructions.
  11. If diagnostics point to internal NDH failure (confirmed absent communications, correct power/grounds, and updated software), replace the NDH module and program/configure as required. Recheck system and clear codes.
  12. After repair, verify operation of navigation, display, touchscreen, and related features; road test if needed.

Likely causes

  • Blown fuse or poor power supply to NDH
  • Intermittent or poor ground connection at NDH mounting point or harness
  • CAN or LIN bus fault (open, short to voltage/ground, or high resistance) preventing module comms
  • Software/firmware error requiring reflash or update
  • Internal display electronics failure (backlight, touchscreen controller, LCD)

Fault status

⚠️ Status
Navigation Display Head malfunction detected. Fault logged as B2468. Verify power, ground, and data-bus communications; check for software updates and perform module-level diagnostics before replacing the display head.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0 - 3.0 hours

Similar codes

B2460 B2461 B2470 U0100 U0073
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MITSUBISHI

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

B2468

Other B — Body

Aux Heater Coolant Pump Circuit Short to Ground

Brand: Other
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • NDH (navigation/display head) internal failure
  • Loss of battery or ignition-switched power to the NDH
  • Open or high-resistance ground at NDH
  • Corroded/damaged connector or harness to NDH
  • Loss of communication on vehicle data bus (CAN/LIN)
  • Corrupted or outdated NDH software/firmware

Symptoms

  • Navigation display blank, black, or no backlight
  • Frozen or unresponsive touchscreen or buttons
  • Garbled or distorted graphics on display
  • Navigation functions unavailable or lost GPS guidance
  • Warning or error message about NDH or infotainment on display or instrument cluster
  • Loss of other infotainment features (radio, phone, vehicle settings) tied to the NDH

What to check

  • Read and record all stored DTCs and freeze-frame data with a full-function scan tool
  • Check for related communication trouble codes (U-codes, other B-codes)
  • Visually inspect NDH connectors and harness for corrosion, bent pins, or water intrusion
  • Verify fuses and fusible links for infotainment/NDH circuits
  • Measure battery and ignition-switched voltage at NDH power pins with key ON
  • Measure resistance to chassis ground from NDH ground pin(s) (should be low)

Signal parameters

  • Battery voltage to NDH (key ON): ~11–14.5 V
  • Ignition-switched supply present when key ON: ~11–14.5 V
  • Ground resistance at NDH ground:
  • CAN bus idle voltages: CANH ≈ 2.5 V, CANL ≈ 2.5 V (recessive); dominant pulses ~CANH 3.5 V / CANL 1.5 V
  • LIN bus idle: near battery voltage when idle; wake/reply pulses per OEM spec
  • Display backlight supply (if separate): check per OEM spec, typically ~12 V or specified low-voltage rail

Diagnostic algorithm

  1. Connect a factory-level or full-function scan tool. Read and save all codes and module presence list; note related U- and B-codes.
  2. Check battery voltage and health. Ensure battery is charged and connections are clean/tight.
  3. Inspect fuses and fusible links for the infotainment/NDH circuit; replace if blown and retest.
  4. Visually inspect NDH connectors and harness for corrosion, bent pins, moisture, or damage. Disconnect and reseat connectors; check pin condition.
  5. With key ON, measure power and ground at the NDH connector: verify battery/ignition supply and low ground resistance.
  6. Verify communication: confirm the NDH is present and responding on CAN/LIN with the scan tool. If module not present, check bus wiring and termination resistors.
  7. If intermittent comms, perform wiggle test of harnesses while monitoring signals/data. Repair any intermittent wiring or poor terminations.
  8. Check for related modules (BCM, radio module) reporting errors. Clear codes and see if B2468 returns; note whether permanent or history code.
  9. If hardware power/communication OK, attempt soft reset or factory reset of the NDH per OEM procedure; re-check operation.
  10. Check for available software/firmware updates or technical service bulletins (TSBs) for the NDH and apply per manufacturer instructions.
  11. If diagnostics point to internal NDH failure (confirmed absent communications, correct power/grounds, and updated software), replace the NDH module and program/configure as required. Recheck system and clear codes.
  12. After repair, verify operation of navigation, display, touchscreen, and related features; road test if needed.

Likely causes

  • Blown fuse or poor power supply to NDH
  • Intermittent or poor ground connection at NDH mounting point or harness
  • CAN or LIN bus fault (open, short to voltage/ground, or high resistance) preventing module comms
  • Software/firmware error requiring reflash or update
  • Internal display electronics failure (backlight, touchscreen controller, LCD)

Fault status

⚠️ Status
Navigation Display Head malfunction detected. Fault logged as B2468. Verify power, ground, and data-bus communications; check for software updates and perform module-level diagnostics before replacing the display head.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0 - 3.0 hours

Similar codes

B2460 B2461 B2470 U0100 U0073
7,045

The library contains 7,045 repair and diagnostic manuals. Choose a brand to open the full manual tree by year, model and trim.

AUDI
1,160
DAEWOO
75
FIAT
26
GENESIS
207
HUMMER
138
HYUNDAI
371
ISUZU
86
LAND ROVER
320
LEXUS
211
LINCOLN
166
MERCEDES-BENZ
856
MERCURY
296
MITSUBISHI
406
PORSCHE
136
TESLA
58
TOYOTA
2,042
TRIUMPH
131
VOLKSWAGEN
139
VOLVO
221
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .