P0111: Intake air temperature sensor range or performance
The intake air temperature sensor gives readings that do not agree with the other sensors. Usually the sensor itself or it is out of position.
| Code | P0111 |
|---|---|
| System | Engine and transmission |
| Group | P01xx, Air and fuel metering |
| Type | Generic: it means the same on every make |
| Can you keep driving? | Yes, no rush |
What P0111 means
The signal arrives, but the ECU does not believe it. For example, with the engine cold it compares intake air temperature with coolant and outside temperature, which should be similar, or it expects the reading to change as you drive and it does not. If it is too far off, this code is stored.
Most common causes
- The sensor itself has drifted or aged
- Sensor coated in oil or dust, so it responds slowly
- Sensor out of position or out of its housing
- Corroded connector skewing the reading
- Another temperature sensor reading wrong, so the comparison fails
Symptoms
- Engine warning light on
- Slightly poorer cold starting
- Slight rise in fuel consumption
- Often no noticeable symptoms
Can you drive with P0111?
Yes, no rush The engine usually runs almost normally. You can keep driving and have it looked at when convenient.
Open the bonnetthe in-depth explanation
How to check it
After standing overnight, switch the ignition on and compare intake air, coolant and outside temperatures in live data: they should be within a few degrees. If only the intake reading is off, the sensor is the suspect.
How to read and clear P0111 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P0111 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P010D The electrical signal from MAF or VAF meter B is too high
- P010E The circuit signal from MAF or VAF meter B is intermittent or erratic
- P010F Readings from the MAF air mass meter and VAF meter A or B do not agree
- P0110 Intake air temperature sensor circuit fault
- P0112 Intake air temperature sensor circuit low
- P0113 Intake air temperature sensor circuit high
- P0114 Intake air temperature sensor circuit intermittent
- P0115 Engine coolant temperature sensor circuit fault
- P0100 Mass or volume air flow sensor circuit fault
- P0101 Air flow sensor range or performance problem
- P0102 Air flow sensor circuit low input
- P0103 Air flow sensor circuit high input
What does code P0111 mean?
The signal arrives, but the ECU does not believe it. For example, with the engine cold it compares intake air temperature with coolant and outside temperature, which should be similar, or it expects the reading to change as you drive and it does not. If it is too far off, this code is stored.
Can you drive with P0111?
The engine usually runs almost normally. You can keep driving and have it looked at when convenient.
How do you clear P0111?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P0111 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
