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Home / DTC / C1111 — Condenser Low Voltage.

C1111 — Condenser Low Voltage.

Detailed page for trouble code C1111.

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Code

C1111

HYUNDAI C — Chassis

Condenser Low Voltage.

Brand: HYUNDAI
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Weak or discharged battery or poor charging system output
  • Blown fuse or faulty relay in the condenser fan/control circuit
  • Corroded, loose or damaged wiring/connectors or poor ground in the condenser circuit
  • Faulty condenser fan motor or A/C clutch (excessive current draw or internal failure)
  • Faulty control module (HVAC control unit, BCM or PCM) or software/calibration issue
  • Intermittent connection due to vibration or water ingress

Symptoms

  • Reduced A/C cooling performance or no cooling
  • Condenser fan(s) do not run when A/C is on or run intermittently
  • Engine temperature higher than normal at idle or in traffic
  • DTC illuminated/stored (possible HVAC or warning lights)
  • Possible unusual fan noise if motor is failing

What to check

  • Verify battery state-of-charge and charging system voltage with engine running (11–14.5 V expected under normal conditions)
  • Inspect related fuses and relays for continuity and operation
  • Visually inspect fan motor connector, wiring harness and ground for corrosion, damage or loose pins
  • Check for water ingress or connector contamination at A/C fan components
  • Measure voltage at fan connector with A/C on to confirm supply and control signals
  • Scan for additional HVAC/vehicle network codes and freeze frame data

Signal parameters

  • Battery/connector supply voltage: approximately 11–14.5 V with engine running (should be near battery voltage with A/C commanded ON)
  • Control signal: near 0 V (ground switched) or battery voltage depending on vehicle design when fan commanded ON — consult vehicle wiring diagram
  • Allowable voltage drop across connector/harness: typically
  • Fan motor coil resistance (typical): commonly
  • Expected fan motor current draw: typically several amps (varies by vehicle); unusually high current suggests motor fault

Diagnostic algorithm

  1. Retrieve freeze frame and complete DTC list; record conditions when C1111 set.
  2. Verify battery voltage and charging system output. Charge or replace battery and retest if below spec.
  3. Inspect fuses and relays for the condenser fan/A/C circuit; replace faulty components.
  4. With A/C ON and engine running, measure supply voltage at the fan connector and ground integrity. Note voltage with fan commanded ON.
  5. If no supply voltage, trace back wiring to relay/fuse/BCM and check for open circuit or poor connection.
  6. If supply present but fan does not run, disconnect fan and bench-test motor directly to battery (observe current draw and operation). Replace motor if it fails or draws excessive current.
  7. Check continuity and resistance of wiring between control module and fan; repair any high-resistance connections or damaged harness.
  8. Verify correct operation of the control relay and driver outputs from BCM/PCM/HVAC module using a diagnostic scanner or oscilloscope if required.
  9. After repairs, clear codes and perform functional test (A/C on, verify fan operation and monitor live data). Road test under conditions that previously triggered the code.
  10. If fault persists and wiring and components test good, consider module fault and follow manufacturer procedures for module testing/replacement.

Likely causes

  • Blown fuse or failed fan relay
  • Open/short or high-resistance connection at fan motor or ground
  • Failed condenser fan motor drawing excessive current or not operating
  • Low battery voltage or weak alternator output under load

Fault status

⚠️ Status
Low voltage detected on condenser circuit. Possible causes include battery/charging problems, open or high-resistance wiring, blown fuse/failed relay, or faulty condenser fan motor. Repair or replace faulty wiring or components and verify proper operation before clearing the code.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

C1110 C1112 C1121 C1131 B1420
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

C1111

LAND ROVER C — Chassis

Lateral acceleration control

Brand: LAND ROVER
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Weak or discharged battery or poor charging system output
  • Blown fuse or faulty relay in the condenser fan/control circuit
  • Corroded, loose or damaged wiring/connectors or poor ground in the condenser circuit
  • Faulty condenser fan motor or A/C clutch (excessive current draw or internal failure)
  • Faulty control module (HVAC control unit, BCM or PCM) or software/calibration issue
  • Intermittent connection due to vibration or water ingress

Symptoms

  • Reduced A/C cooling performance or no cooling
  • Condenser fan(s) do not run when A/C is on or run intermittently
  • Engine temperature higher than normal at idle or in traffic
  • DTC illuminated/stored (possible HVAC or warning lights)
  • Possible unusual fan noise if motor is failing

What to check

  • Verify battery state-of-charge and charging system voltage with engine running (11–14.5 V expected under normal conditions)
  • Inspect related fuses and relays for continuity and operation
  • Visually inspect fan motor connector, wiring harness and ground for corrosion, damage or loose pins
  • Check for water ingress or connector contamination at A/C fan components
  • Measure voltage at fan connector with A/C on to confirm supply and control signals
  • Scan for additional HVAC/vehicle network codes and freeze frame data

Signal parameters

  • Battery/connector supply voltage: approximately 11–14.5 V with engine running (should be near battery voltage with A/C commanded ON)
  • Control signal: near 0 V (ground switched) or battery voltage depending on vehicle design when fan commanded ON — consult vehicle wiring diagram
  • Allowable voltage drop across connector/harness: typically
  • Fan motor coil resistance (typical): commonly
  • Expected fan motor current draw: typically several amps (varies by vehicle); unusually high current suggests motor fault

Diagnostic algorithm

  1. Retrieve freeze frame and complete DTC list; record conditions when C1111 set.
  2. Verify battery voltage and charging system output. Charge or replace battery and retest if below spec.
  3. Inspect fuses and relays for the condenser fan/A/C circuit; replace faulty components.
  4. With A/C ON and engine running, measure supply voltage at the fan connector and ground integrity. Note voltage with fan commanded ON.
  5. If no supply voltage, trace back wiring to relay/fuse/BCM and check for open circuit or poor connection.
  6. If supply present but fan does not run, disconnect fan and bench-test motor directly to battery (observe current draw and operation). Replace motor if it fails or draws excessive current.
  7. Check continuity and resistance of wiring between control module and fan; repair any high-resistance connections or damaged harness.
  8. Verify correct operation of the control relay and driver outputs from BCM/PCM/HVAC module using a diagnostic scanner or oscilloscope if required.
  9. After repairs, clear codes and perform functional test (A/C on, verify fan operation and monitor live data). Road test under conditions that previously triggered the code.
  10. If fault persists and wiring and components test good, consider module fault and follow manufacturer procedures for module testing/replacement.

Likely causes

  • Blown fuse or failed fan relay
  • Open/short or high-resistance connection at fan motor or ground
  • Failed condenser fan motor drawing excessive current or not operating
  • Low battery voltage or weak alternator output under load

Fault status

⚠️ Status
Low voltage detected on condenser circuit. Possible causes include battery/charging problems, open or high-resistance wiring, blown fuse/failed relay, or faulty condenser fan motor. Repair or replace faulty wiring or components and verify proper operation before clearing the code.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

C1110 C1112 C1121 C1131 B1420
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

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+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
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Code

C1111

Other C — Chassis

ABS Power Relay Coil Open Circuit

Brand: Other
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Weak or discharged battery or poor charging system output
  • Blown fuse or faulty relay in the condenser fan/control circuit
  • Corroded, loose or damaged wiring/connectors or poor ground in the condenser circuit
  • Faulty condenser fan motor or A/C clutch (excessive current draw or internal failure)
  • Faulty control module (HVAC control unit, BCM or PCM) or software/calibration issue
  • Intermittent connection due to vibration or water ingress

Symptoms

  • Reduced A/C cooling performance or no cooling
  • Condenser fan(s) do not run when A/C is on or run intermittently
  • Engine temperature higher than normal at idle or in traffic
  • DTC illuminated/stored (possible HVAC or warning lights)
  • Possible unusual fan noise if motor is failing

What to check

  • Verify battery state-of-charge and charging system voltage with engine running (11–14.5 V expected under normal conditions)
  • Inspect related fuses and relays for continuity and operation
  • Visually inspect fan motor connector, wiring harness and ground for corrosion, damage or loose pins
  • Check for water ingress or connector contamination at A/C fan components
  • Measure voltage at fan connector with A/C on to confirm supply and control signals
  • Scan for additional HVAC/vehicle network codes and freeze frame data

Signal parameters

  • Battery/connector supply voltage: approximately 11–14.5 V with engine running (should be near battery voltage with A/C commanded ON)
  • Control signal: near 0 V (ground switched) or battery voltage depending on vehicle design when fan commanded ON — consult vehicle wiring diagram
  • Allowable voltage drop across connector/harness: typically
  • Fan motor coil resistance (typical): commonly
  • Expected fan motor current draw: typically several amps (varies by vehicle); unusually high current suggests motor fault

Diagnostic algorithm

  1. Retrieve freeze frame and complete DTC list; record conditions when C1111 set.
  2. Verify battery voltage and charging system output. Charge or replace battery and retest if below spec.
  3. Inspect fuses and relays for the condenser fan/A/C circuit; replace faulty components.
  4. With A/C ON and engine running, measure supply voltage at the fan connector and ground integrity. Note voltage with fan commanded ON.
  5. If no supply voltage, trace back wiring to relay/fuse/BCM and check for open circuit or poor connection.
  6. If supply present but fan does not run, disconnect fan and bench-test motor directly to battery (observe current draw and operation). Replace motor if it fails or draws excessive current.
  7. Check continuity and resistance of wiring between control module and fan; repair any high-resistance connections or damaged harness.
  8. Verify correct operation of the control relay and driver outputs from BCM/PCM/HVAC module using a diagnostic scanner or oscilloscope if required.
  9. After repairs, clear codes and perform functional test (A/C on, verify fan operation and monitor live data). Road test under conditions that previously triggered the code.
  10. If fault persists and wiring and components test good, consider module fault and follow manufacturer procedures for module testing/replacement.

Likely causes

  • Blown fuse or failed fan relay
  • Open/short or high-resistance connection at fan motor or ground
  • Failed condenser fan motor drawing excessive current or not operating
  • Low battery voltage or weak alternator output under load

Fault status

⚠️ Status
Low voltage detected on condenser circuit. Possible causes include battery/charging problems, open or high-resistance wiring, blown fuse/failed relay, or faulty condenser fan motor. Repair or replace faulty wiring or components and verify proper operation before clearing the code.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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