C0950 code meaning
Tire Pressure Monitoring Sensor Front Left
What C0950 means
No public source links C0950 to a carmaker. The same content, the left front tire sensor, is documented under other numbers: GM and Saab use C0750, whose 2011 Saab 9-5 subcodes split a weak cell (03), too few telegrams (29) and an internal defect (39); Mitsubishi's 2022 index carries C1731 for the front left sensor and C1741 when its data stay away. GM bulletin PIC5650M lists C0750 among the codes that radio interference from aftermarket devices can cause, so the environment belongs in the diagnosis. As a catch-all for the front left unit the code covers a sensor that falls silent, reports nonsense or is not learned. Air pressure itself is not the issue; the indicator shows a system fault and that wheel loses its value.
C0950 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.3 to 1.5 hours
- Clears after repairAfter a drive cycle
Symptoms of C0950
- TPMS lamp flashes, then stays on
- No pressure value for the left front tire
Common causes of C0950
- Most likelyCell of the left front sensor exhausted
- PossibleSensor broken during tire fitting or wheel swapped for one without sensor
- PossibleNew sensor ID not registered for the front left position
- Less likelyRadio interference from aftermarket devices (GM PIC5650M)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Tpms sensor flTpms module
What each part of C0950 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 50 | The exact fault in that area. |
What to do next
- Note C0950 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0950
What does C0950 mean?
C0950 means "Tire Pressure Monitoring Sensor Front Left". No public source links C0950 to a carmaker. It is a generic code, so it means the same on every make.
Is it safe to drive with C0950?
C0950 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will C0950 fail an emissions test?
C0950 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0950 to fix?
Difficulty: medium. A typical repair takes 0.3 to 1.5 hours of work. This is a job for a workshop.
Will C0950 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.