Code
P076E
Generic
P — Powertrain
Shift Solenoid H Intermittent
Views:
UK: 12
EN: 15
RU: 19
AI status
Completed
Completed
100%
Causes
- Wiring harness damage (chafing, broken wire, short to ground or battery)
- Poor or corroded connector or terminal at the solenoid or TCM
- Intermittent solenoid coil internal failure
- Contaminated transmission fluid or debris preventing valve/solenoid movement
- Poor ground or low battery/charging system voltage causing intermittent drive to solenoid
- Faulty TCM/ECM driver output (rare)
Symptoms
- Malfunction Indicator Lamp (MIL)/Check Engine Light illuminated intermittently
- Harsh, delayed, or erratic shifting in affected gears
- Transmission may slip, fail to engage a gear, or default to limp mode intermittently
- Inconsistent or occasional abnormal transmission noise
- Driveability complaints that come and go with temperature or vibration
What to check
- Read DTCs and freeze-frame data; note conditions when code set (engine/trans temp, gear, speed)
- Check live data for commanded vs actual solenoid status and transmission errors
- Inspect transmission fluid level and condition (burnt smell, heavy contamination)
- Visually inspect wiring and connectors for damage, corrosion, bent pins, or loose terminals at the solenoid and TCM
- Wiggle test harness/connectors while monitoring live data to reproduce intermittent signal
- Check battery/charging system voltage under load
Signal parameters
- Supply voltage to solenoid: ~Battery voltage when commanded ON (typically ~11–14 V) but varies by design
- Typical solenoid coil resistance (varies by vehicle): commonly ~5–30 Ω for on/off solenoids — check vehicle spec
- Command type: often PWM duty cycle when controlled by TCM; duty 0–100% depending on commanded position
- Typical PWM frequency range (varies by design): tens to a few hundred Hz; consult vehicle-specific documentation
- Expected behavior: steady command when commanded ON and corresponding position/pressure change in hydraulic circuits
Diagnostic algorithm
- Retrieve all codes and freeze frame; record operating conditions when P076E set.
- Check transmission fluid level and condition; if contaminated, service fluid and filter before electrical replacement steps.
- Visually inspect wiring and connector for solenoid H and TCM terminals; repair any corrosion, loose pins, or physical damage.
- With key ON (engine off), check for battery voltage at solenoid power feed and good ground at solenoid connector.
- Measure solenoid coil resistance at the harness connector and compare to manufacturer spec; note if resistance changes with heat/movement (sign of intermittent coil).
- Backprobe connector and use a scan tool to command solenoid ON/OFF while monitoring voltage/duty cycle and solver response; perform a wiggle test to reproduce the intermittent condition.
- If wiring and connector tests pass, swap solenoid H with another identical solenoid (if accessible) and clear codes; road test to see if code follows the solenoid (helps isolate solenoid vs harness/TCM).
- If intermittent signal remains and follows wiring, perform continuity and insulation tests of the harness; repair or replace damaged wiring and connectors.
- If wiring and solenoid bench tests are good and intermittent persists, consider diagnosing TCM driver output or replacing TCM per manufacturer diagnostic flow (seek module-level tests or reflash before replacement).
- After repairs, clear codes and perform full road test under the same conditions that previously set the fault; confirm no return of code and proper shift function.
Likely causes
- Corroded/loose connector at shift solenoid H
- Chafed or broken wire in harness where it flexes or routes near exhaust or suspension
- Contaminated fluid/particle in valve body causing intermittent valve sticking
- Intermittent solenoid coil electrical fault (opens when hot)
- Poor ground or intermittent low battery voltage under load
Fault status
Status
Shift Solenoid H Intermittent — intermittent electrical/operation detected
Repair difficulty: Medium
Diagnostic time: 1.5 - 3.0 hours
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