What it means
The transmission control module detected slip in friction element G. The code identifies the element; its design and function depend on the transmission.
At a glance
- Usually lights the check-engine light
How it works
The transmission control module checks gear ratios and shaft speeds to confirm that friction element G holds when applied. P07A0 indicates that element G slipped beyond the allowed amount, though its function and the gears that use it vary by transmission.
Common causes
Most likely first.
- Worn or damaged friction element G
- Low or degraded transmission fluid
- Hydraulic pressure loss or internal leakage
- Valve body or control fault affecting element application
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
How to diagnose it
- Save freeze-frame data and check live data for the commanded gear and input/output speeds to see when element G slip was recorded.
- Check the fluid level and condition using the vehicle maker’s specified procedure, since low or degraded fluid can prevent adequate holding pressure.
- Inspect transmission wiring and connectors for damage, corrosion, or loose fit that might affect element G control.
- Compare commanded and actual ratios on a controlled road test, noting whether slip occurs during a particular shift, temperature, or load condition.
- If the fluid and wiring are sound, have hydraulic pressure and valve-body operation checked against the manufacturer's specification.
- If the hydraulic supply is adequate but slip remains, inspect element G and its apply seals for wear or internal leakage.
Common fixes
- Correct the fluid level or replace degraded fluid with the specified type.
- Repair damaged wiring or clean and secure transmission connectors.
- Repair a valve-body or hydraulic fault that prevents element G from applying correctly.
- Replace worn element G friction parts or damaged apply seals.
Can I keep driving?
Keep driving to a minimum and avoid towing or hard acceleration; continued slipping can overheat the transmission and turn a repairable fault into broader internal damage. If shifts are missing or the vehicle enters limp mode, stop safely and arrange recovery.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.