C0750 code meaning
Left Front Tire Pressure Sensor
What C0750 means
None of the public code lists carries C0750. GM, however, uses it in its tire pressure monitoring for the left front wheel transmitter, and the Saab 9-5 (2010-2011) and 9-4X service pages define the subcodes: 03 for a weak sensor battery, 29 for a sensor that sends too few telegrams, 39 for an internal sensor defect. The check runs above 40 km/h, when the roll switch in each wheel unit should wake the transmitter; if it stays silent or its data are invalid, the body control module sets the code and the TPMS lamp blinks for a minute, then stays lit. GM bulletin PIC5650M lists C0750 among the effects of radio interference from add-on devices. C0755, C0760 and C0765 cover the other wheels. No evidence ties the code to a cruise control brake switch.
C0750 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 C0750
- TPMS lamp flashes about one minute after start, then stays on
- Dashes instead of a pressure value for the left front tire
- Service tire monitor message in the driver display
Common causes of C0750
- Most likelyBuilt-in battery of the wheel sensor exhausted (subcode 03)
- PossibleSensor damaged during tire service, after a flat or replaced by a valve without sensor
- PossibleRadio interference from aftermarket devices or metallised window tint (GM PIC5650M)
- Less likelyRemote receiver or its antenna unplugged or faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Tpms sensor flRke receiverBody control module
What each part of C0750 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 C0750 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 C0750
What does C0750 mean?
C0750 means "Left Front Tire Pressure Sensor". None of the public code lists carries C0750. It is a generic code, so it means the same on every make.
Is it safe to drive with C0750?
C0750 does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will C0750 fail an emissions test?
C0750 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 C0750 to fix?
Difficulty: medium. A typical repair takes 0.3 to 1.5 hours of work. This is a job for a workshop.
Will C0750 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.