P050C code meaning
Cold Start Engine Coolant Temperature Performance
Powertrain system Generic code P05xx codes Check engine light
What P050C means
P050C is documented only on Bosch ME9 in the Saab 9-3 V6 2.8 turbo: a cold-start plausibility check of the coolant temperature sensor. After a long stop coolant and intake air must read about the same; the code sets if coolant is more than 10 °C below or 15 °C above intake air, once per trip with the warning lamp. A wrong coolant reading distorts cold-start enrichment and can run the fan on a cold engine. The common reading 'coolant warms up too slowly' does not fit – that is P0125/P0128. GM, Ford and FCA do not use P050C.
P050C at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyEasy, DIY possible
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P050C
- Check engine light on
- Rough running after a cold start
- Radiator fan runs with a cold engine
Common causes of P050C
- Most likelyCoolant temperature sensor drifting, wrong characteristic
- PossibleContact resistance or corrosion at the coolant or intake air sensor connector
- PossibleIntake air temperature sensor reading wrong
- Less likelyAuxiliary heater or block heater not recognised, very short stop
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Engine coolant temperature sensorIntake air temperature sensorEngine control module
What each part of P050C means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 5 | Area: vehicle speed, idle control and auxiliary inputs. |
| 0C | The exact fault in that area. |
What to do next
- Note P050C 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 P050C
What does P050C mean?
P050C means "Cold Start Engine Coolant Temperature Performance". P050C is documented only on Bosch ME9 in the Saab 9-3 V6 2.8 turbo: a cold-start plausibility check of the coolant temperature sensor. It is a generic code, so it means the same on every make.
Is it safe to drive with P050C?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P050C fail an emissions test?
Yes, it can. P050C is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P050C to fix?
Difficulty: easy. A typical repair takes 0.3 to 1.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P050C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.