P07AE

Code

Generic P — Powertrain

Transmission Friction Element G Performance/Stuck Off

Brand: Generic

Type: P — Powertrain

Views: UK: 20 EN: 38 RU: 22

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Page language: EN

Shift solenoid or control valve for Friction Element G stuck open/shorted/faulty
Contaminated, low, or degraded transmission fluid
Valve body passages clogged or sticking spool valves
Internal hydraulic leaks (worn piston seals, clutch pack wear)
Wiring harness or connector faults to solenoid (open, short, high resistance, corrosion)
Faulty pressure sensor or inaccurate line pressure reading

Scan for freeze frame data and related transmission DTCs; clear and re-run test drive to confirm
Inspect transmission fluid level, color, and odor; check for severe contamination or burnt smell
Visual inspection of wiring and connectors to the transmission/solenoid for damage, corrosion, or looseness
Measure solenoid resistance and compare with manufacturer specification
Command the solenoid on/off with a scan tool to observe response and currents
Check transmission line/accumulator/regulator pressure with a calibrated gauge under specified conditions

Solenoid resistance (ohms) — compare to spec; significant deviation may indicate short/open
Solenoid current draw (mA) or duty cycle (%) when commanded — should change when commanded
Transmission line pressure (psi/kPa) at idle, apply, and under load — compare to spec
Shift apply pressure for Friction Element G (psi/kPa) when commanded on/off
TCM commanded duty cycle/value and actual feedback (if available) for the G solenoid
Transmission input and output speeds (rpm) and calculated gear ratio — used to confirm element apply

Retrieve freeze frame data and stored DTCs. Note conditions (temp, vehicle speed, gear, throttle).
Visually inspect wiring, connectors, and ground circuits for the solenoid/valve. Repair any damage/corrosion.
Check fluid level and condition. If fluid is heavily contaminated or burnt, consider fluid and filter service before further tests.
Measure solenoid coil resistance with a multimeter; compare to spec. If out of range, replace solenoid.
With a scan tool, command the Friction Element G solenoid on/off while observing solenoid current/duty and transmission response. Lack of change suggests electrical or hydraulic fault.
Perform a transmission line pressure test while commanding the solenoid to apply. Verify apply pressure rises to expected value when commanded.
If electrical and pressure tests pass but symptom persists, remove valve body/solenoid body for inspection of bores, spools, and passages for debris or wear. Clean or replace as required.
Inspect clutch/friction pack condition if internal leakage is suspected (may require partial disassembly). Replace worn internal components as needed.
After repairs, clear codes and perform a road test under the same conditions that set the code. Re-scan to confirm the fault is resolved.
If intermittent or unresolved, check for TCM updates, and consider TCM or harness replacement based on manufacturer guidance.