Code
C1924
LAND ROVER
C — Chassis
Output of the power steering solenoid actuator - short circuit to ground
Views:
UK: 4
EN: 13
RU: 9
AI status
Completed
Completed
100%
Causes
- Damaged or chafed harness shorting the solenoid output to chassis ground
- Corroded or pushed-out connector pins creating a direct path to ground
- Internal short in the power steering solenoid/actuator
- Failed driver transistor/output stage inside the PSCM (module fault)
- Water or contamination in connector or actuator causing short
- Improper or failed aftermarket electrical work tied into the harness
Symptoms
- EPS/power steering warning lamp or message displayed
- Reduced or lost power steering assist; steering heavier than normal
- Intermittent or erratic steering assist
- Stored fault code C1924 (may be accompanied by other EPS/communication codes)
- Possible fuse or circuit breaker trips related to steering circuit
What to check
- Read and record all stored codes and freeze-frame data with a capable scan tool
- Visually inspect steering harness, connectors and solenoid for damage, corrosion, or contamination
- Check connector pins for pushed-out, bent or corroded terminals at actuator and PSCM
- With ignition off, disconnect solenoid connector and check resistance between the solenoid output pin and chassis ground
- Measure voltage/continuity at the PSCM output connector with actuator disconnected
- Check related fuses/relays and protective devices for signs of damage
Signal parameters
- Expected solenoid coil resistance: typically low ohms (example 1–30 Ω) — consult OEM spec for exact value
- Output signal type: switched/PWM drive from 0% to 100% duty (0–battery voltage range) when energized — verify with OEM data
- With actuator disconnected: no direct continuity/very low resistance between module output pin and chassis ground (if present, indicates short)
- With actuator connected and commanded ON: output may show PWM voltage modulation; current draw typically in the 0.1–several amp range depending on solenoid design (check OEM)
- Battery voltage present at supply circuits when system active; voltage should be stable under load
Diagnostic algorithm
- Connect a diagnostic scan tool, read all codes and freeze-frame; note any related U or C codes.
- Visually inspect the steering solenoid connector, wiring harness, and PSCM connector for damage, corrosion, fluid ingress or pin issues.
- With ignition OFF, disconnect the solenoid actuator connector. Measure resistance between the solenoid output pin and chassis ground. A very low resistance (near 0 Ω) indicates a short in the harness or solenoid.
- Inspect and test the solenoid coil resistance across its supply and ground terminals; compare to OEM specification. Replace the solenoid if coil is shorted or out of spec.
- With the solenoid disconnected, check for continuity between the PSCM output pin and ground. If the short is present with the actuator disconnected, suspect PSCM output stage fault.
- Backprobe the PSCM output while commanding the solenoid ON via diagnostic tool. Observe voltage (PWM) and current; look for clamping, no output, or low impedance to ground.
- Perform a wiggle/stress test on the harness and connectors while monitoring the output and watching for code set or changes to verify intermittent faults.
- Repair any damaged wiring, replace corroded connectors, and replace the solenoid if defective. If the short remains after wiring and solenoid are proven good, consider PSCM repair or replacement following OEM procedures.
- After repairs, clear codes and perform a road test and functional checks to confirm the fault does not return.
Likely causes
- Wiring insulation chafed where harness rubs against chassis or steering components
- Connector corrosion or bent pins at the solenoid or PSCM connector
- Solenoid coil internally shorted to its body/ground
- Faulty PSCM output transistor (short to ground at module output)
- Water intrusion into solenoid connector or inside actuator
Fault status
Status
Power steering solenoid output circuit short to ground detected. PSCM has limited or disabled output and stored DTC C1924. Service required to locate and repair short.
Repair difficulty: Medium
Diagnostic time: 1.5 - 3.0 hours
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Code
C1924
MITSUBISHI
C — Chassis
Tire air pressure sensor,Tire2
Views:
UK: 10
EN: 19
RU: 14
AI status
Completed
Completed
100%
Causes
- Damaged or chafed harness shorting the solenoid output to chassis ground
- Corroded or pushed-out connector pins creating a direct path to ground
- Internal short in the power steering solenoid/actuator
- Failed driver transistor/output stage inside the PSCM (module fault)
- Water or contamination in connector or actuator causing short
- Improper or failed aftermarket electrical work tied into the harness
Symptoms
- EPS/power steering warning lamp or message displayed
- Reduced or lost power steering assist; steering heavier than normal
- Intermittent or erratic steering assist
- Stored fault code C1924 (may be accompanied by other EPS/communication codes)
- Possible fuse or circuit breaker trips related to steering circuit
What to check
- Read and record all stored codes and freeze-frame data with a capable scan tool
- Visually inspect steering harness, connectors and solenoid for damage, corrosion, or contamination
- Check connector pins for pushed-out, bent or corroded terminals at actuator and PSCM
- With ignition off, disconnect solenoid connector and check resistance between the solenoid output pin and chassis ground
- Measure voltage/continuity at the PSCM output connector with actuator disconnected
- Check related fuses/relays and protective devices for signs of damage
Signal parameters
- Expected solenoid coil resistance: typically low ohms (example 1–30 Ω) — consult OEM spec for exact value
- Output signal type: switched/PWM drive from 0% to 100% duty (0–battery voltage range) when energized — verify with OEM data
- With actuator disconnected: no direct continuity/very low resistance between module output pin and chassis ground (if present, indicates short)
- With actuator connected and commanded ON: output may show PWM voltage modulation; current draw typically in the 0.1–several amp range depending on solenoid design (check OEM)
- Battery voltage present at supply circuits when system active; voltage should be stable under load
Diagnostic algorithm
- Connect a diagnostic scan tool, read all codes and freeze-frame; note any related U or C codes.
- Visually inspect the steering solenoid connector, wiring harness, and PSCM connector for damage, corrosion, fluid ingress or pin issues.
- With ignition OFF, disconnect the solenoid actuator connector. Measure resistance between the solenoid output pin and chassis ground. A very low resistance (near 0 Ω) indicates a short in the harness or solenoid.
- Inspect and test the solenoid coil resistance across its supply and ground terminals; compare to OEM specification. Replace the solenoid if coil is shorted or out of spec.
- With the solenoid disconnected, check for continuity between the PSCM output pin and ground. If the short is present with the actuator disconnected, suspect PSCM output stage fault.
- Backprobe the PSCM output while commanding the solenoid ON via diagnostic tool. Observe voltage (PWM) and current; look for clamping, no output, or low impedance to ground.
- Perform a wiggle/stress test on the harness and connectors while monitoring the output and watching for code set or changes to verify intermittent faults.
- Repair any damaged wiring, replace corroded connectors, and replace the solenoid if defective. If the short remains after wiring and solenoid are proven good, consider PSCM repair or replacement following OEM procedures.
- After repairs, clear codes and perform a road test and functional checks to confirm the fault does not return.
Likely causes
- Wiring insulation chafed where harness rubs against chassis or steering components
- Connector corrosion or bent pins at the solenoid or PSCM connector
- Solenoid coil internally shorted to its body/ground
- Faulty PSCM output transistor (short to ground at module output)
- Water intrusion into solenoid connector or inside actuator
Fault status
Status
Power steering solenoid output circuit short to ground detected. PSCM has limited or disabled output and stored DTC C1924. Service required to locate and repair short.
Repair difficulty: Medium
Diagnostic time: 1.5 - 3.0 hours
Similar codes
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Code
C1924
Other
C — Chassis
VAPS Solenoid Actuator Output Circuit Short To Ground
Views:
UK: 15
EN: 32
RU: 23
AI status
Completed
Completed
100%
Causes
- Damaged or chafed harness shorting the solenoid output to chassis ground
- Corroded or pushed-out connector pins creating a direct path to ground
- Internal short in the power steering solenoid/actuator
- Failed driver transistor/output stage inside the PSCM (module fault)
- Water or contamination in connector or actuator causing short
- Improper or failed aftermarket electrical work tied into the harness
Symptoms
- EPS/power steering warning lamp or message displayed
- Reduced or lost power steering assist; steering heavier than normal
- Intermittent or erratic steering assist
- Stored fault code C1924 (may be accompanied by other EPS/communication codes)
- Possible fuse or circuit breaker trips related to steering circuit
What to check
- Read and record all stored codes and freeze-frame data with a capable scan tool
- Visually inspect steering harness, connectors and solenoid for damage, corrosion, or contamination
- Check connector pins for pushed-out, bent or corroded terminals at actuator and PSCM
- With ignition off, disconnect solenoid connector and check resistance between the solenoid output pin and chassis ground
- Measure voltage/continuity at the PSCM output connector with actuator disconnected
- Check related fuses/relays and protective devices for signs of damage
Signal parameters
- Expected solenoid coil resistance: typically low ohms (example 1–30 Ω) — consult OEM spec for exact value
- Output signal type: switched/PWM drive from 0% to 100% duty (0–battery voltage range) when energized — verify with OEM data
- With actuator disconnected: no direct continuity/very low resistance between module output pin and chassis ground (if present, indicates short)
- With actuator connected and commanded ON: output may show PWM voltage modulation; current draw typically in the 0.1–several amp range depending on solenoid design (check OEM)
- Battery voltage present at supply circuits when system active; voltage should be stable under load
Diagnostic algorithm
- Connect a diagnostic scan tool, read all codes and freeze-frame; note any related U or C codes.
- Visually inspect the steering solenoid connector, wiring harness, and PSCM connector for damage, corrosion, fluid ingress or pin issues.
- With ignition OFF, disconnect the solenoid actuator connector. Measure resistance between the solenoid output pin and chassis ground. A very low resistance (near 0 Ω) indicates a short in the harness or solenoid.
- Inspect and test the solenoid coil resistance across its supply and ground terminals; compare to OEM specification. Replace the solenoid if coil is shorted or out of spec.
- With the solenoid disconnected, check for continuity between the PSCM output pin and ground. If the short is present with the actuator disconnected, suspect PSCM output stage fault.
- Backprobe the PSCM output while commanding the solenoid ON via diagnostic tool. Observe voltage (PWM) and current; look for clamping, no output, or low impedance to ground.
- Perform a wiggle/stress test on the harness and connectors while monitoring the output and watching for code set or changes to verify intermittent faults.
- Repair any damaged wiring, replace corroded connectors, and replace the solenoid if defective. If the short remains after wiring and solenoid are proven good, consider PSCM repair or replacement following OEM procedures.
- After repairs, clear codes and perform a road test and functional checks to confirm the fault does not return.
Likely causes
- Wiring insulation chafed where harness rubs against chassis or steering components
- Connector corrosion or bent pins at the solenoid or PSCM connector
- Solenoid coil internally shorted to its body/ground
- Faulty PSCM output transistor (short to ground at module output)
- Water intrusion into solenoid connector or inside actuator
Fault status
Status
Power steering solenoid output circuit short to ground detected. PSCM has limited or disabled output and stored DTC C1924. Service required to locate and repair short.
Repair difficulty: Medium
Diagnostic time: 1.5 - 3.0 hours
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