P0FFF: Reserved Powertrain Fault
Manufacturer-specific reserved code in the SAE generic range used as catch-all for hybrid system faults that do not map to a more specific defined code. Should be diagnosed using the freeze frame data and any additional manufacturer codes.
What P0FFF means
P0FFF is a generic OBD-II powertrain code in the other powertrain group.
- Check engine light
- Usually on
- Emissions-related
- No
- Limp mode possible
- Not typical
- Drive cycle to clear
- Not required
Get it fixed
Post this code once and get quotes from local mechanics. Free to post.
Makes the repair and parts links below specific to your car. Kept in this browser only.
Common causes
- 01Unspecified hybrid system faultPossible
Can I drive with P0FFF?
Usually yes, for a short time.
The car will often drive normally, but get it diagnosed soon. If you notice rough running, warning lights flashing, overheating or a burning smell, stop driving.
Why we rate it moderate
- Turns on the check engine light
Severity is our rule-based rating from the code’s flags in OBDex and the system it affects, not an inspection of your car. If the check engine light is flashing, or you notice overheating, low oil pressure, or brake or steering problems, stop driving and get help.
How to diagnose P0FFF
- 1
Confirm the code and save freeze-frame data
Read the codes with an OBD-II scan tool and note every code, not just P0FFF. Save the freeze-frame data (speed, load, temperature when the fault set) before clearing anything; it tells you when the fault happens.
- 2
Fix other faults first
If other codes are stored, start with power-supply, sensor-circuit and communication codes. They can cause this code as a side effect.
- 3
Check live data
Watch the related sensor and actuator readings in live data (Hybrid control module) and compare them with expected values in the service information for your vehicle.
- 4
Test the likely causes in order
Start with the most likely cause and work down: Unspecified hybrid system fault. Test before replacing parts.
- 5
Check for recalls and service bulletins
Look up recalls for your exact vehicle with its VIN, and ask a dealer about technical service bulletins (TSBs). Manufacturers sometimes issue software updates or extended warranties for known faults.
- 6
Clear the code and verify the repair
After the repair, clear the code and drive the car under the conditions in the freeze-frame data to confirm it does not return.
P0FFF repair cost estimate
Estimate, not a quote. Labor times are typical ranges for this code from OBDex, and $125/hr is an assumed rate. Shop rates and labor times vary by vehicle and region. Diagnosis time may be billed separately.
- DIY difficulty
- Shop only
- Good DIY job?
- Usually a shop job
Needs dealer-level tools or high-voltage training.
Parts and systems involved
- Hybrid control module
P0FFF FAQ
What does P0FFF mean?
P0FFF means “Reserved Powertrain Fault”. Manufacturer-specific reserved code in the SAE generic range used as catch-all for hybrid system faults that do not map to a more specific defined code. Should be diagnosed using the freeze frame data and any additional manufacturer codes.
Is P0FFF serious? Can I keep driving?
We rate P0FFF as moderate severity. Usually yes, for a short time. The car will often drive normally, but get it diagnosed soon. If you notice rough running, warning lights flashing, overheating or a burning smell, stop driving.
What causes P0FFF?
The most common causes, from most to least likely: Unspecified hybrid system fault. Test before replacing parts, because several causes can set the same code.
How much does it cost to fix P0FFF?
Typical labor is about $125–$2,000 at an assumed $125/hour shop rate, plus parts. That is an estimate, not a quote: labor times and rates vary by vehicle and region, and diagnosis may be billed separately.
Can I fix P0FFF myself?
DIY difficulty is shop only. Most owners leave this to a shop because it needs involved testing or specialist tools. Always confirm the cause before buying parts.
Will P0FFF clear itself?
If the fault was intermittent, the warning may go off once the computer stops seeing it, but the code stays in memory. Fix the cause; clearing the code alone doesn’t repair anything.