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Home / DTC / B1618 — Part E19/2 (Right license plate lamp) is defective

B1618 — Part E19/2 (Right license plate lamp) is defective

Detailed page for trouble code B1618.

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22,491specific
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Code

B1618

MERCEDES-BENZ B — Body

Part E19/2 (Right license plate lamp) is defective

Brand: MERCEDES-BENZ
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Burnt or failed lamp/bulb or LED module
  • Corroded or loose connector or socket at E19/2
  • Open or short in wiring between lamp and SAM/body control module
  • Blown fuse or poor fuse contact
  • Faulty ground connection at lamp
  • Defective SAM/body control output or internal driver

Symptoms

  • Right license plate lamp does not illuminate
  • Driver information message or warning about exterior lamp
  • Asymmetric illumination of license plate at night
  • Fault stored in vehicle diagnostic system for E19/2
  • Intermittent lamp operation or flicker

What to check

  • Visually inspect right license plate lamp, lens and socket for damage or moisture
  • Check lamp bulb or LED module by substitution with known-good lamp
  • Inspect connector pins for corrosion, bent pins or pushed-out terminals
  • Check fuses related to exterior lighting in fuse box (replace if blown)
  • Verify chassis ground at lamp is clean and tight
  • Use scan tool to read fault memory and live data for E19/2 and related outputs

Signal parameters

  • Expected supply voltage at lamp connector: ~11–14 V with lights ON
  • Ground continuity: near 0 Ω between lamp ground and vehicle chassis
  • Bulb current draw: consistent with lamp type (incandescent: several hundred mA; LED: lower current)
  • Control unit output: switched supply or PWM depending on model — check live data for ON/OFF status

Diagnostic algorithm

  1. Read and record fault codes from all control units (SAM/body module and instrument cluster). Do not clear yet.
  2. Visually inspect right license plate lamp, housing and wiring for obvious damage or corrosion.
  3. Remove lamp and inspect bulb/LED module; substitute with a known-good lamp or bench-test the lamp to confirm function.
  4. Inspect and clean the connector and socket; ensure secure mating and terminal retention.
  5. Check related fuses and replace if necessary; re-test lamp operation.
  6. With a multimeter, measure voltage at the lamp connector with lights ON; if no supply, trace back to SAM/fuse/relay.
  7. Check ground continuity from lamp ground to chassis; repair poor ground as needed.
  8. If supply and ground present and lamp known-good still fails, check SAM output using scan tool (switch output ON via actuation) and measure for switching/PWM. If SAM does not drive output, suspect module or wiring fault.
  9. Repair wiring, connectors or lamp as indicated. Clear codes and perform function test. Re-scan to confirm code does not return.
  10. If fault returns after lamp and wiring verified, consider module replacement or dealer-level diagnostics for control unit and coding.

Likely causes

  • Failed bulb or LED module in E19/2
  • Corroded/poor connector or ground at the license plate lamp
  • Open circuit or damaged wiring between lamp and SAM
  • Blown fuse for the exterior lighting circuit

Fault status

⚠️ Status
E19/2 (Right license plate lamp) defective — circuit fault or no lamp detected
🟢 Repair difficulty: Easy
⏱️ Diagnostic time: 0.5-1.0 hours

Similar codes

B1619 B1620 B1621 B1668
856

Browse 856 MERCEDES-BENZ manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MERCEDES-BENZ

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Code

B1618

MITSUBISHI B — Body

Z axis low G Sensor failure

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

Causes

  • Burnt or failed lamp/bulb or LED module
  • Corroded or loose connector or socket at E19/2
  • Open or short in wiring between lamp and SAM/body control module
  • Blown fuse or poor fuse contact
  • Faulty ground connection at lamp
  • Defective SAM/body control output or internal driver

Symptoms

  • Right license plate lamp does not illuminate
  • Driver information message or warning about exterior lamp
  • Asymmetric illumination of license plate at night
  • Fault stored in vehicle diagnostic system for E19/2
  • Intermittent lamp operation or flicker

What to check

  • Visually inspect right license plate lamp, lens and socket for damage or moisture
  • Check lamp bulb or LED module by substitution with known-good lamp
  • Inspect connector pins for corrosion, bent pins or pushed-out terminals
  • Check fuses related to exterior lighting in fuse box (replace if blown)
  • Verify chassis ground at lamp is clean and tight
  • Use scan tool to read fault memory and live data for E19/2 and related outputs

Signal parameters

  • Expected supply voltage at lamp connector: ~11–14 V with lights ON
  • Ground continuity: near 0 Ω between lamp ground and vehicle chassis
  • Bulb current draw: consistent with lamp type (incandescent: several hundred mA; LED: lower current)
  • Control unit output: switched supply or PWM depending on model — check live data for ON/OFF status

Diagnostic algorithm

  1. Read and record fault codes from all control units (SAM/body module and instrument cluster). Do not clear yet.
  2. Visually inspect right license plate lamp, housing and wiring for obvious damage or corrosion.
  3. Remove lamp and inspect bulb/LED module; substitute with a known-good lamp or bench-test the lamp to confirm function.
  4. Inspect and clean the connector and socket; ensure secure mating and terminal retention.
  5. Check related fuses and replace if necessary; re-test lamp operation.
  6. With a multimeter, measure voltage at the lamp connector with lights ON; if no supply, trace back to SAM/fuse/relay.
  7. Check ground continuity from lamp ground to chassis; repair poor ground as needed.
  8. If supply and ground present and lamp known-good still fails, check SAM output using scan tool (switch output ON via actuation) and measure for switching/PWM. If SAM does not drive output, suspect module or wiring fault.
  9. Repair wiring, connectors or lamp as indicated. Clear codes and perform function test. Re-scan to confirm code does not return.
  10. If fault returns after lamp and wiring verified, consider module replacement or dealer-level diagnostics for control unit and coding.

Likely causes

  • Failed bulb or LED module in E19/2
  • Corroded/poor connector or ground at the license plate lamp
  • Open circuit or damaged wiring between lamp and SAM
  • Blown fuse for the exterior lighting circuit

Fault status

⚠️ Status
E19/2 (Right license plate lamp) defective — circuit fault or no lamp detected
🟢 Repair difficulty: Easy
⏱️ Diagnostic time: 0.5-1.0 hours

Similar codes

B1619 B1620 B1621 B1668
406

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

MITSUBISHI

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Code

B1618

Other B — Body

Wiper Rear Disable Switch Circuit Short To Ground

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

Causes

  • Burnt or failed lamp/bulb or LED module
  • Corroded or loose connector or socket at E19/2
  • Open or short in wiring between lamp and SAM/body control module
  • Blown fuse or poor fuse contact
  • Faulty ground connection at lamp
  • Defective SAM/body control output or internal driver

Symptoms

  • Right license plate lamp does not illuminate
  • Driver information message or warning about exterior lamp
  • Asymmetric illumination of license plate at night
  • Fault stored in vehicle diagnostic system for E19/2
  • Intermittent lamp operation or flicker

What to check

  • Visually inspect right license plate lamp, lens and socket for damage or moisture
  • Check lamp bulb or LED module by substitution with known-good lamp
  • Inspect connector pins for corrosion, bent pins or pushed-out terminals
  • Check fuses related to exterior lighting in fuse box (replace if blown)
  • Verify chassis ground at lamp is clean and tight
  • Use scan tool to read fault memory and live data for E19/2 and related outputs

Signal parameters

  • Expected supply voltage at lamp connector: ~11–14 V with lights ON
  • Ground continuity: near 0 Ω between lamp ground and vehicle chassis
  • Bulb current draw: consistent with lamp type (incandescent: several hundred mA; LED: lower current)
  • Control unit output: switched supply or PWM depending on model — check live data for ON/OFF status

Diagnostic algorithm

  1. Read and record fault codes from all control units (SAM/body module and instrument cluster). Do not clear yet.
  2. Visually inspect right license plate lamp, housing and wiring for obvious damage or corrosion.
  3. Remove lamp and inspect bulb/LED module; substitute with a known-good lamp or bench-test the lamp to confirm function.
  4. Inspect and clean the connector and socket; ensure secure mating and terminal retention.
  5. Check related fuses and replace if necessary; re-test lamp operation.
  6. With a multimeter, measure voltage at the lamp connector with lights ON; if no supply, trace back to SAM/fuse/relay.
  7. Check ground continuity from lamp ground to chassis; repair poor ground as needed.
  8. If supply and ground present and lamp known-good still fails, check SAM output using scan tool (switch output ON via actuation) and measure for switching/PWM. If SAM does not drive output, suspect module or wiring fault.
  9. Repair wiring, connectors or lamp as indicated. Clear codes and perform function test. Re-scan to confirm code does not return.
  10. If fault returns after lamp and wiring verified, consider module replacement or dealer-level diagnostics for control unit and coding.

Likely causes

  • Failed bulb or LED module in E19/2
  • Corroded/poor connector or ground at the license plate lamp
  • Open circuit or damaged wiring between lamp and SAM
  • Blown fuse for the exterior lighting circuit

Fault status

⚠️ Status
E19/2 (Right license plate lamp) defective — circuit fault or no lamp detected
🟢 Repair difficulty: Easy
⏱️ Diagnostic time: 0.5-1.0 hours

Similar codes

B1619 B1620 B1621 B1668
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