Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / P1885 — Gearbox Drive unit(SRC Up)

P1885 — Gearbox Drive unit(SRC Up)

Detailed page for trouble code P1885.

34,405codes
59brands
11,914generic
22,491specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

P1885

MITSUBISHI P — Powertrain

Gearbox Drive unit(SRC Up)

Brand: MITSUBISHI
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty gearbox drive unit actuator (stuck or mechanically jammed)
  • Open/short in drive unit wiring or poor connector connection (corrosion, bent pins)
  • Failed shift/drive solenoid or position sensor
  • Low or contaminated transmission fluid causing binding or improper pressure
  • Faulty transmission control module (TCM) or related ECU software issue
  • Intermittent power/ground supply to actuator (battery/charging issues)

Symptoms

  • Amber Check Engine or Transmission warning lamp illuminated
  • Transmission may be stuck in one gear or fail to shift correctly
  • Harsh or delayed shifts, slipping, or limp-home mode
  • No drive or unexpected engagement when selecting gears
  • Stored freeze-frame data showing abnormal actuator state

What to check

  • Read and record freeze-frame and all stored transmission and engine codes with a capable scan tool
  • Visually inspect connectors and wiring at the gearbox drive unit and TCM for corrosion, heat damage or loose pins
  • Check battery voltage and charging system (low voltage can cause erratic actuator behavior)
  • Check transmission fluid level and condition; look for contamination or burnt smell
  • Use scan tool to view live data/actuator status and command the drive unit on/off where possible
  • Perform a wiggle test on wiring while monitoring live data for intermittent faults

Signal parameters

  • Actuator/control circuit continuity: expect low ohm resistance for solenoid coils (typical range often 5–30 Ω depending on design) — consult vehicle-specific service manual for exact values
  • Control voltage range: 0–12 V supply on power feed; command signals may be PWM varying 0–100% duty cycle
  • Feedback/position sensors (if present): typically 0–5 V analog or discrete logic indicating position — compare to known-good values from service manual

Diagnostic algorithm

  1. Verify P1885 present and record freeze-frame; clear code and attempt a drive to see if it returns.
  2. Inspect wiring and connectors at the gearbox drive unit and TCM; repair corrosion, bent pins or damaged insulation.
  3. Check battery/charging voltage and repair if low. Low system voltage can create false faults.
  4. Check transmission fluid level and condition; top or change fluid if low/contaminated. Replace filter if applicable.
  5. With a multimeter, measure continuity and resistance of the actuator/solenoid circuit; compare to manufacturer specs. Check for shorts to ground or power.
  6. Use a scan tool to command the drive unit/solenoid and observe response (actuator movement, current draw, changes in position feedback).
  7. If actuator does not respond electrically but wiring and power/ground are good, remove and bench-test or replace the gearbox drive unit/solenoid. Inspect mechanically for binding.
  8. If actuator and wiring test good but code persists, inspect TCM grounds and connectors and consider reflashing/updating TCM software or replacing TCM after ruling out all hardware issues.
  9. After repairs, clear codes and perform a road test and re-scan to confirm the fault is resolved.

Likely causes

  • Wiring/connector fault to drive actuator
  • Stuck/failed gearbox drive actuator or solenoid
  • Low/dirty transmission fluid causing mechanical binding

Fault status

⚠️ Status
Transmission control module detected gearbox drive unit (SRC) in an unexpected activated/up state or abnormal signal; electrical or mechanical fault in drive actuator circuit suspected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.5-3.0 hours
406

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

MITSUBISHI

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

P1885

Other P — Powertrain

Transmission Transfer Case Disengaged Solenoid Short to Ground

Brand: Other
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty gearbox drive unit actuator (stuck or mechanically jammed)
  • Open/short in drive unit wiring or poor connector connection (corrosion, bent pins)
  • Failed shift/drive solenoid or position sensor
  • Low or contaminated transmission fluid causing binding or improper pressure
  • Faulty transmission control module (TCM) or related ECU software issue
  • Intermittent power/ground supply to actuator (battery/charging issues)

Symptoms

  • Amber Check Engine or Transmission warning lamp illuminated
  • Transmission may be stuck in one gear or fail to shift correctly
  • Harsh or delayed shifts, slipping, or limp-home mode
  • No drive or unexpected engagement when selecting gears
  • Stored freeze-frame data showing abnormal actuator state

What to check

  • Read and record freeze-frame and all stored transmission and engine codes with a capable scan tool
  • Visually inspect connectors and wiring at the gearbox drive unit and TCM for corrosion, heat damage or loose pins
  • Check battery voltage and charging system (low voltage can cause erratic actuator behavior)
  • Check transmission fluid level and condition; look for contamination or burnt smell
  • Use scan tool to view live data/actuator status and command the drive unit on/off where possible
  • Perform a wiggle test on wiring while monitoring live data for intermittent faults

Signal parameters

  • Actuator/control circuit continuity: expect low ohm resistance for solenoid coils (typical range often 5–30 Ω depending on design) — consult vehicle-specific service manual for exact values
  • Control voltage range: 0–12 V supply on power feed; command signals may be PWM varying 0–100% duty cycle
  • Feedback/position sensors (if present): typically 0–5 V analog or discrete logic indicating position — compare to known-good values from service manual

Diagnostic algorithm

  1. Verify P1885 present and record freeze-frame; clear code and attempt a drive to see if it returns.
  2. Inspect wiring and connectors at the gearbox drive unit and TCM; repair corrosion, bent pins or damaged insulation.
  3. Check battery/charging voltage and repair if low. Low system voltage can create false faults.
  4. Check transmission fluid level and condition; top or change fluid if low/contaminated. Replace filter if applicable.
  5. With a multimeter, measure continuity and resistance of the actuator/solenoid circuit; compare to manufacturer specs. Check for shorts to ground or power.
  6. Use a scan tool to command the drive unit/solenoid and observe response (actuator movement, current draw, changes in position feedback).
  7. If actuator does not respond electrically but wiring and power/ground are good, remove and bench-test or replace the gearbox drive unit/solenoid. Inspect mechanically for binding.
  8. If actuator and wiring test good but code persists, inspect TCM grounds and connectors and consider reflashing/updating TCM software or replacing TCM after ruling out all hardware issues.
  9. After repairs, clear codes and perform a road test and re-scan to confirm the fault is resolved.

Likely causes

  • Wiring/connector fault to drive actuator
  • Stuck/failed gearbox drive actuator or solenoid
  • Low/dirty transmission fluid causing mechanical binding

Fault status

⚠️ Status
Transmission control module detected gearbox drive unit (SRC) in an unexpected activated/up state or abnormal signal; electrical or mechanical fault in drive actuator circuit suspected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.5-3.0 hours
8,969

The library contains 8,969 repair and diagnostic manuals. Choose a brand to open the full manual tree by year, model and trim.

ALFA ROMEO
89
AUDI
1,243
BMW
479
CADILLAC
206
CHEVROLET
456
CHRYSLER
55
DAEWOO
75
FIAT
26
GENESIS
207
HUMMER
138
HYUNDAI
371
ISUZU
86
LAND ROVER
320
LEXUS
280
LINCOLN
166
MERCEDES-BENZ
856
MERCURY
296
MITSUBISHI
406
PORSCHE
136
TESLA
58
TOYOTA
2,042
TRIUMPH
131
VOLKSWAGEN
626
VOLVO
221
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .