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Home / DTC / C1412 — Solenoid disconnection

C1412 — Solenoid disconnection

Detailed page for trouble code C1412.

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Code

C1412

MITSUBISHI C — Chassis

Solenoid disconnection

Brand: MITSUBISHI
Type: C — Chassis
Views: UK: 14 EN: 18 RU: 15
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or disconnected harness connector at the solenoid
  • Broken or chafed wiring (open circuit)
  • Corroded or bent terminals in connector
  • Failed solenoid coil (internal open)
  • Blown fuse or faulty relay supplying the solenoid circuit
  • Poor or missing ground at solenoid or ECU

Symptoms

  • Related warning lamp illuminated (ABS, AWD, TCS, or transmission warning)
  • Related system function disabled or degraded (ABS/TCS/transfer case shift issues)
  • No solenoid operation when commanded via diagnostic tool
  • Intermittent fault or loss of function under vibration
  • Stored diagnostic trouble code C1412 (and possibly related codes)

What to check

  • Read and record all stored codes and freeze frame data with a scan tool
  • Visually inspect solenoid, connector, and wiring harness for damage, corrosion or disconnection
  • Check related fuses and relays for continuity and proper operation
  • Back-probe solenoid connector while commanding the solenoid with a scan tool and observe voltage/duty
  • Measure solenoid coil resistance at the connector with the harness disconnected and compare to spec
  • Perform continuity check from solenoid connector to the control module pin (check for open or short to ground/power)

Signal parameters

  • Typical resting/command voltage: near battery voltage (~11–14 V) on power feed; switched/grounded or PWM on control line when commanded
  • Expected coil resistance: commonly in the range of ~5–100 ohms depending on solenoid type (consult vehicle service spec)
  • Current draw when energized: often 0.2–3 A depending on coil and duty cycle
  • Control signal when commanded: either switched ground/power or PWM duty (frequency commonly tens to a few hundred Hz)
  • Symptoms of open: infinite resistance (OL) or very high resistance at the coil; no voltage change on command at the solenoid connector

Diagnostic algorithm

  1. Connect a capable OBD-II/scan tool, read and record all codes and live data. Note any related codes.
  2. Visually inspect the solenoid connector, harness, and mounting for physical damage, corrosion, or contamination. Ensure connector is fully seated.
  3. Check related fuses and relays; replace if faulty.
  4. With ignition ON (engine off), measure voltage at the solenoid power terminal; verify battery voltage present if applicable.
  5. Disconnect harness at solenoid and measure coil resistance between solenoid terminals. Compare to OEM specification. Infinite/open = failed coil or open wiring.
  6. Back-probe the connector and command the solenoid ON using the scan tool; observe voltage or PWM at the control terminal. If command present but solenoid does not actuate, suspect solenoid failure.
  7. If no command present at control terminal, trace continuity from the control module to the solenoid connector. Check for opens/shorts to ground or power and repair wiring as needed.
  8. Inspect and test ground circuits related to the solenoid and ECU. Clean and tighten grounds.
  9. If wiring and connector are good but problem persists, test/replace the solenoid. If replacement solenoid also fails, consider ECU driver fault and follow manufacturer procedures to test/replace module.
  10. After repair, clear codes, perform functional tests and a road/operational test to confirm fault does not return.

Likely causes

  • Disconnected or pushed-out connector at the solenoid
  • Wire broken at flex point or behind connector (pinched/abraded)
  • Terminal corrosion causing high resistance or open circuit
  • Solenoid coil failed open
  • Related fuse or relay not providing power
  • Damaged ECU output stage

Fault status

⚠️ Status
Solenoid circuit disconnected — open/poor connection detected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

C1410 C1411 C1413 C1450 C1201
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Code

C1412

Other C — Chassis

Traction Control Valve LF Circuit Short To Ground

Brand: Other
Type: C — Chassis
Views: UK: 21 EN: 22 RU: 19
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or disconnected harness connector at the solenoid
  • Broken or chafed wiring (open circuit)
  • Corroded or bent terminals in connector
  • Failed solenoid coil (internal open)
  • Blown fuse or faulty relay supplying the solenoid circuit
  • Poor or missing ground at solenoid or ECU

Symptoms

  • Related warning lamp illuminated (ABS, AWD, TCS, or transmission warning)
  • Related system function disabled or degraded (ABS/TCS/transfer case shift issues)
  • No solenoid operation when commanded via diagnostic tool
  • Intermittent fault or loss of function under vibration
  • Stored diagnostic trouble code C1412 (and possibly related codes)

What to check

  • Read and record all stored codes and freeze frame data with a scan tool
  • Visually inspect solenoid, connector, and wiring harness for damage, corrosion or disconnection
  • Check related fuses and relays for continuity and proper operation
  • Back-probe solenoid connector while commanding the solenoid with a scan tool and observe voltage/duty
  • Measure solenoid coil resistance at the connector with the harness disconnected and compare to spec
  • Perform continuity check from solenoid connector to the control module pin (check for open or short to ground/power)

Signal parameters

  • Typical resting/command voltage: near battery voltage (~11–14 V) on power feed; switched/grounded or PWM on control line when commanded
  • Expected coil resistance: commonly in the range of ~5–100 ohms depending on solenoid type (consult vehicle service spec)
  • Current draw when energized: often 0.2–3 A depending on coil and duty cycle
  • Control signal when commanded: either switched ground/power or PWM duty (frequency commonly tens to a few hundred Hz)
  • Symptoms of open: infinite resistance (OL) or very high resistance at the coil; no voltage change on command at the solenoid connector

Diagnostic algorithm

  1. Connect a capable OBD-II/scan tool, read and record all codes and live data. Note any related codes.
  2. Visually inspect the solenoid connector, harness, and mounting for physical damage, corrosion, or contamination. Ensure connector is fully seated.
  3. Check related fuses and relays; replace if faulty.
  4. With ignition ON (engine off), measure voltage at the solenoid power terminal; verify battery voltage present if applicable.
  5. Disconnect harness at solenoid and measure coil resistance between solenoid terminals. Compare to OEM specification. Infinite/open = failed coil or open wiring.
  6. Back-probe the connector and command the solenoid ON using the scan tool; observe voltage or PWM at the control terminal. If command present but solenoid does not actuate, suspect solenoid failure.
  7. If no command present at control terminal, trace continuity from the control module to the solenoid connector. Check for opens/shorts to ground or power and repair wiring as needed.
  8. Inspect and test ground circuits related to the solenoid and ECU. Clean and tighten grounds.
  9. If wiring and connector are good but problem persists, test/replace the solenoid. If replacement solenoid also fails, consider ECU driver fault and follow manufacturer procedures to test/replace module.
  10. After repair, clear codes, perform functional tests and a road/operational test to confirm fault does not return.

Likely causes

  • Disconnected or pushed-out connector at the solenoid
  • Wire broken at flex point or behind connector (pinched/abraded)
  • Terminal corrosion causing high resistance or open circuit
  • Solenoid coil failed open
  • Related fuse or relay not providing power
  • Damaged ECU output stage

Fault status

⚠️ Status
Solenoid circuit disconnected — open/poor connection detected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

C1410 C1411 C1413 C1450 C1201
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