Code
P075E
Generic
P — Powertrain
Shift Solenoid G Intermittent
AI status
Completed
Completed
100%
Causes
- Intermittent/open/short in wiring harness to shift solenoid G
- Poor, corroded, or loose connector at the solenoid or transmission harness
- Faulty shift solenoid G (internal intermittent coil or valve sticking)
- Contaminated or low transmission fluid causing solenoid valve to stick
- Faulty PCM/TCM driver or intermittent ground/power supply to TCM
- Intermittent internal valve body or transmission hydraulic fault
Symptoms
- Check Engine Light (MIL) illuminated, intermittent or stored code P075E
- Intermittent harsh, delayed, or erratic shifting
- Transmission may go into limp/derate mode intermittently
- Unexpected gear engagement or inability to shift at times
- Possible transmission noise or shudder during affected shifts
What to check
- Read and record all stored codes and freeze-frame data with a full-function scan tool
- Check transmission fluid level and condition (color, odor, contamination)
- Visually inspect solenoid connector and wiring for corrosion, damage, or looseness
- Wiggle test the wiring while monitoring live solenoid command/feedback for intermittent change
- Compare this code with other transmission codes present
- Check battery and charging system voltage (low voltage can cause intermittent faults)
Signal parameters
- Solenoid coil resistance (vehicle-specific) typically ~10–50 ohms — consult OEM spec
- Expected activation: PCM/TCM uses switched ground or PWM; supply is battery voltage (~11–14.5 V) when commanded
- Duty cycle: 0–100% depending on modulation; PWM frequencies commonly 50–300 Hz (varies by design)
- When commanded ON, control circuit should show consistent voltage/ground and stable current draw; intermittent open/short or fluctuating duty indicates fault
Diagnostic algorithm
- Connect a full-function scan tool and confirm P075E, note freeze-frame and related codes
- Inspect transmission fluid level/condition; service fluid if contaminated or severely degraded
- Visually inspect and secure the solenoid connector; disconnect and check pins for corrosion, bent pins, or water intrusion
- With connector disconnected, measure solenoid coil resistance and compare to OEM spec; repeat while gently flexing harness to check for intermittent change
- Backprobe harness at solenoid and monitor voltage/ground while commanding solenoid ON/OFF with scan tool; observe for stable battery voltage and command ground or expected PWM
- Perform a wiggle/torque test on harness and connector while monitoring live data to reproduce intermittent behavior
- If the solenoid is commanded but no proper response (voltage/current present but no operation), consider bench-testing or swapping with a known-good solenoid (if serviceable)
- Inspect and test related power/ground circuits and PCM/TCM connectors/grounds for intermittent faults
- If wiring and connectors are good and solenoid fails bench or actuation tests, replace solenoid (and filter/strainer if applicable) and retest
- After repair clear codes and perform a road test to verify repair; if intermittent persists, further inspect valve body and consider TCM/PCM diagnosis
Likely causes
- Loose/corroded connector at solenoid or transmission harness
- Wiring chafe or intermittent short to ground/power in harness
- Failing/intermittent solenoid coil or sticking valve due to contamination
- Low/dirty transmission fluid causing erratic solenoid operation
Fault status
Status
Intermittent electrical/control fault detected on Transmission Shift Solenoid G (circuit intermittent, open/short, or signal out-of-range).
Repair difficulty: Medium
Diagnostic time: 1.5 - 4.0 hours
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