Chassis, generic

C0950 Tire Pressure Monitoring Sensor Front Left

Check engine lightUsually off
EmissionsNot relevant
Drive cycleRequired
Limp modeNo

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.

Likely causes

Cell of the left front sensor exhausted
Sensor broken during tire fitting or wheel swapped for one without sensor
New sensor ID not registered for the front left position
Radio interference from aftermarket devices (GM PIC5650M)

Symptoms

  • TPMS lamp flashes, then stays on
  • No pressure value for the left front tire

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€40–250
Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

tpms sensor fltpms module

Related codes

C0951C0952C0953C0750

References: saabwisonline.com, mitsubishitechinfo.com, static.nhtsa.gov.