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Home / DTC / C1211 — ABS Indicator Lamp Circuit Malfunction

C1211 — ABS Indicator Lamp Circuit Malfunction

Detailed page for trouble code C1211.

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22,461specific
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Code

C1211

HUMMER C — Chassis

ABS Indicator Lamp Circuit Malfunction

Brand: HUMMER
Type: C — Chassis
Views: UK: 28 EN: 48 RU: 40
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse for instrument cluster or ABS module
  • Open or shorted wiring in ABS lamp circuit
  • Corroded or loose connector at ABS module, instrument cluster, or ground
  • Failed instrument cluster warning lamp or LED driver
  • Faulty ABS module or body control module (BCM) driver
  • CAN/bus communication error affecting lamp command or feedback

Symptoms

  • ABS warning lamp stays on or does not illuminate during key-on bulb check
  • ABS lamp flickers or behaves intermittently
  • Other related warning lamps (e.g., traction control) may also illuminate
  • Possible stored ABS and/or network communication trouble codes
  • No noticeable driving effect except illuminated warning lamp

What to check

  • Read ABS and network modules for all stored and pending codes
  • Perform key-on lamp check to observe ABS lamp behavior
  • Visual inspection of fuses, wiring harnesses, connectors for damage or corrosion
  • Check ground points associated with instrument cluster and ABS module
  • Attempt to actuate ABS lamp using a professional scan tool (module lamp command)
  • Check vehicle CAN network for communication faults

Signal parameters

  • Instrument cluster ABS lamp: battery voltage (~12V) when commanded ON; ~0V or open when OFF (depends on driver topology)
  • Driver circuit current: small lamp current for LED clusters (tens of mA) or higher for incandescent bulbs (hundreds of mA)
  • Continuity/resistance between ABS lamp terminal and module/cluster connector: low ohms expected when intact
  • Voltage at ABS module lamp output with key ON and during lamp request
  • CAN/Serial network messages: presence/absence of ABS status and lamp command frames

Diagnostic algorithm

  1. Retrieve fault codes from ABS, BCM, and instrument cluster. Record freeze frame and occurrences.
  2. Verify battery voltage is within specification. Low battery can cause false detections.
  3. Inspect fuses related to ABS, instrument cluster, and BCM. Replace any blown fuses and re-check.
  4. Perform a visual inspection of wiring and connectors between ABS module and instrument cluster for damage, corrosion, or loose pins.
  5. With key ON, observe ABS lamp during cluster bulb check. Note if lamp illuminates and whether it is steady, flickers, or not at all.
  6. Use a scan tool to command the ABS lamp on/off while monitoring voltage at the lamp connector and the ABS module lamp output. Compare expected voltages.
  7. Measure continuity and resistance of the lamp circuit between the instrument cluster and ABS module. Check for short to ground or short to battery.
  8. Wiggle wiring harnesses/connectors while monitoring lamp operation and codes to identify intermittent faults.
  9. If wiring and connectors are good, substitute or bench-test the instrument cluster or ABS module (if available) or check for module driver faults using a scope or service data.
  10. Repair or replace damaged wiring, connectors, fuses, cluster, or module as required. Clear codes and perform road test / re-check to confirm repair.

Likely causes

  • Damaged or pinched harness between ABS module and instrument cluster
  • Corroded connector terminal at the ABS module or cluster
  • Failed lamp/LED in instrument cluster
  • Ground fault at lamp circuit
  • Intermittent connection causing open-circuit detection

Fault status

⚠️ Status
C1211 — ABS Indicator Lamp Circuit Malfunction: fault reported in the ABS warning lamp circuit (open/short/intermittent or driver/module fault).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5 - 2.0 hours

Similar codes

C1210 C1212 C1221 C1250 U0121
Repair manuals

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138

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Code

C1211

HYUNDAI C — Chassis

Rear Right(RR) Wheel Speed Sensor-Airgap | Wheel Speed Sensor Rear-RH Invalid/no Signal | Signal Passenger Buckled Input State not valid

Brand: HYUNDAI
Type: C — Chassis
Views: UK: 29 EN: 53 RU: 51
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse for instrument cluster or ABS module
  • Open or shorted wiring in ABS lamp circuit
  • Corroded or loose connector at ABS module, instrument cluster, or ground
  • Failed instrument cluster warning lamp or LED driver
  • Faulty ABS module or body control module (BCM) driver
  • CAN/bus communication error affecting lamp command or feedback

Symptoms

  • ABS warning lamp stays on or does not illuminate during key-on bulb check
  • ABS lamp flickers or behaves intermittently
  • Other related warning lamps (e.g., traction control) may also illuminate
  • Possible stored ABS and/or network communication trouble codes
  • No noticeable driving effect except illuminated warning lamp

What to check

  • Read ABS and network modules for all stored and pending codes
  • Perform key-on lamp check to observe ABS lamp behavior
  • Visual inspection of fuses, wiring harnesses, connectors for damage or corrosion
  • Check ground points associated with instrument cluster and ABS module
  • Attempt to actuate ABS lamp using a professional scan tool (module lamp command)
  • Check vehicle CAN network for communication faults

Signal parameters

  • Instrument cluster ABS lamp: battery voltage (~12V) when commanded ON; ~0V or open when OFF (depends on driver topology)
  • Driver circuit current: small lamp current for LED clusters (tens of mA) or higher for incandescent bulbs (hundreds of mA)
  • Continuity/resistance between ABS lamp terminal and module/cluster connector: low ohms expected when intact
  • Voltage at ABS module lamp output with key ON and during lamp request
  • CAN/Serial network messages: presence/absence of ABS status and lamp command frames

Diagnostic algorithm

  1. Retrieve fault codes from ABS, BCM, and instrument cluster. Record freeze frame and occurrences.
  2. Verify battery voltage is within specification. Low battery can cause false detections.
  3. Inspect fuses related to ABS, instrument cluster, and BCM. Replace any blown fuses and re-check.
  4. Perform a visual inspection of wiring and connectors between ABS module and instrument cluster for damage, corrosion, or loose pins.
  5. With key ON, observe ABS lamp during cluster bulb check. Note if lamp illuminates and whether it is steady, flickers, or not at all.
  6. Use a scan tool to command the ABS lamp on/off while monitoring voltage at the lamp connector and the ABS module lamp output. Compare expected voltages.
  7. Measure continuity and resistance of the lamp circuit between the instrument cluster and ABS module. Check for short to ground or short to battery.
  8. Wiggle wiring harnesses/connectors while monitoring lamp operation and codes to identify intermittent faults.
  9. If wiring and connectors are good, substitute or bench-test the instrument cluster or ABS module (if available) or check for module driver faults using a scope or service data.
  10. Repair or replace damaged wiring, connectors, fuses, cluster, or module as required. Clear codes and perform road test / re-check to confirm repair.

Likely causes

  • Damaged or pinched harness between ABS module and instrument cluster
  • Corroded connector terminal at the ABS module or cluster
  • Failed lamp/LED in instrument cluster
  • Ground fault at lamp circuit
  • Intermittent connection causing open-circuit detection

Fault status

⚠️ Status
C1211 — ABS Indicator Lamp Circuit Malfunction: fault reported in the ABS warning lamp circuit (open/short/intermittent or driver/module fault).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5 - 2.0 hours

Similar codes

C1210 C1212 C1221 C1250 U0121
371

Browse 371 HYUNDAI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

HYUNDAI

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Code

C1211

MITSUBISHI C — Chassis

RR wheel speed sensor signal

Brand: MITSUBISHI
Type: C — Chassis
Views: UK: 34 EN: 76 RU: 52
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse for instrument cluster or ABS module
  • Open or shorted wiring in ABS lamp circuit
  • Corroded or loose connector at ABS module, instrument cluster, or ground
  • Failed instrument cluster warning lamp or LED driver
  • Faulty ABS module or body control module (BCM) driver
  • CAN/bus communication error affecting lamp command or feedback

Symptoms

  • ABS warning lamp stays on or does not illuminate during key-on bulb check
  • ABS lamp flickers or behaves intermittently
  • Other related warning lamps (e.g., traction control) may also illuminate
  • Possible stored ABS and/or network communication trouble codes
  • No noticeable driving effect except illuminated warning lamp

What to check

  • Read ABS and network modules for all stored and pending codes
  • Perform key-on lamp check to observe ABS lamp behavior
  • Visual inspection of fuses, wiring harnesses, connectors for damage or corrosion
  • Check ground points associated with instrument cluster and ABS module
  • Attempt to actuate ABS lamp using a professional scan tool (module lamp command)
  • Check vehicle CAN network for communication faults

Signal parameters

  • Instrument cluster ABS lamp: battery voltage (~12V) when commanded ON; ~0V or open when OFF (depends on driver topology)
  • Driver circuit current: small lamp current for LED clusters (tens of mA) or higher for incandescent bulbs (hundreds of mA)
  • Continuity/resistance between ABS lamp terminal and module/cluster connector: low ohms expected when intact
  • Voltage at ABS module lamp output with key ON and during lamp request
  • CAN/Serial network messages: presence/absence of ABS status and lamp command frames

Diagnostic algorithm

  1. Retrieve fault codes from ABS, BCM, and instrument cluster. Record freeze frame and occurrences.
  2. Verify battery voltage is within specification. Low battery can cause false detections.
  3. Inspect fuses related to ABS, instrument cluster, and BCM. Replace any blown fuses and re-check.
  4. Perform a visual inspection of wiring and connectors between ABS module and instrument cluster for damage, corrosion, or loose pins.
  5. With key ON, observe ABS lamp during cluster bulb check. Note if lamp illuminates and whether it is steady, flickers, or not at all.
  6. Use a scan tool to command the ABS lamp on/off while monitoring voltage at the lamp connector and the ABS module lamp output. Compare expected voltages.
  7. Measure continuity and resistance of the lamp circuit between the instrument cluster and ABS module. Check for short to ground or short to battery.
  8. Wiggle wiring harnesses/connectors while monitoring lamp operation and codes to identify intermittent faults.
  9. If wiring and connectors are good, substitute or bench-test the instrument cluster or ABS module (if available) or check for module driver faults using a scope or service data.
  10. Repair or replace damaged wiring, connectors, fuses, cluster, or module as required. Clear codes and perform road test / re-check to confirm repair.

Likely causes

  • Damaged or pinched harness between ABS module and instrument cluster
  • Corroded connector terminal at the ABS module or cluster
  • Failed lamp/LED in instrument cluster
  • Ground fault at lamp circuit
  • Intermittent connection causing open-circuit detection

Fault status

⚠️ Status
C1211 — ABS Indicator Lamp Circuit Malfunction: fault reported in the ABS warning lamp circuit (open/short/intermittent or driver/module fault).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5 - 2.0 hours

Similar codes

C1210 C1212 C1221 C1250 U0121
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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+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
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Code

C1211

Other C — Chassis

ABS Outlet Valve Coil RF Circuit Open

Brand: Other
Type: C — Chassis
Views: UK: 32 EN: 51 RU: 72
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse for instrument cluster or ABS module
  • Open or shorted wiring in ABS lamp circuit
  • Corroded or loose connector at ABS module, instrument cluster, or ground
  • Failed instrument cluster warning lamp or LED driver
  • Faulty ABS module or body control module (BCM) driver
  • CAN/bus communication error affecting lamp command or feedback

Symptoms

  • ABS warning lamp stays on or does not illuminate during key-on bulb check
  • ABS lamp flickers or behaves intermittently
  • Other related warning lamps (e.g., traction control) may also illuminate
  • Possible stored ABS and/or network communication trouble codes
  • No noticeable driving effect except illuminated warning lamp

What to check

  • Read ABS and network modules for all stored and pending codes
  • Perform key-on lamp check to observe ABS lamp behavior
  • Visual inspection of fuses, wiring harnesses, connectors for damage or corrosion
  • Check ground points associated with instrument cluster and ABS module
  • Attempt to actuate ABS lamp using a professional scan tool (module lamp command)
  • Check vehicle CAN network for communication faults

Signal parameters

  • Instrument cluster ABS lamp: battery voltage (~12V) when commanded ON; ~0V or open when OFF (depends on driver topology)
  • Driver circuit current: small lamp current for LED clusters (tens of mA) or higher for incandescent bulbs (hundreds of mA)
  • Continuity/resistance between ABS lamp terminal and module/cluster connector: low ohms expected when intact
  • Voltage at ABS module lamp output with key ON and during lamp request
  • CAN/Serial network messages: presence/absence of ABS status and lamp command frames

Diagnostic algorithm

  1. Retrieve fault codes from ABS, BCM, and instrument cluster. Record freeze frame and occurrences.
  2. Verify battery voltage is within specification. Low battery can cause false detections.
  3. Inspect fuses related to ABS, instrument cluster, and BCM. Replace any blown fuses and re-check.
  4. Perform a visual inspection of wiring and connectors between ABS module and instrument cluster for damage, corrosion, or loose pins.
  5. With key ON, observe ABS lamp during cluster bulb check. Note if lamp illuminates and whether it is steady, flickers, or not at all.
  6. Use a scan tool to command the ABS lamp on/off while monitoring voltage at the lamp connector and the ABS module lamp output. Compare expected voltages.
  7. Measure continuity and resistance of the lamp circuit between the instrument cluster and ABS module. Check for short to ground or short to battery.
  8. Wiggle wiring harnesses/connectors while monitoring lamp operation and codes to identify intermittent faults.
  9. If wiring and connectors are good, substitute or bench-test the instrument cluster or ABS module (if available) or check for module driver faults using a scope or service data.
  10. Repair or replace damaged wiring, connectors, fuses, cluster, or module as required. Clear codes and perform road test / re-check to confirm repair.

Likely causes

  • Damaged or pinched harness between ABS module and instrument cluster
  • Corroded connector terminal at the ABS module or cluster
  • Failed lamp/LED in instrument cluster
  • Ground fault at lamp circuit
  • Intermittent connection causing open-circuit detection

Fault status

⚠️ Status
C1211 — ABS Indicator Lamp Circuit Malfunction: fault reported in the ABS warning lamp circuit (open/short/intermittent or driver/module fault).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5 - 2.0 hours

Similar codes

C1210 C1212 C1221 C1250 U0121
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