P0111 on Saab: Causes, Symptoms and Fix Cost
Quick Answer
Safe to drive (short-term)
P0111 on a Saab means the intake air temperature signal is present but does not make sense. Unlike P0112 and P0113, which are plain wiring and voltage faults, P0111 is a plausibility check: the computer compares the reading with the coolant temperature and with how the air should behave as the engine runs, and flags a value that is stuck, too hot or too far from the others. A worn sensor, a poor connector or a sensor sitting in heat-soaked air are the usual causes. Repair typically costs 25 to 100 EUR for the sensor, or up to about 380 EUR where it is built into the airflow sensor.
- Severity
- Low · Emissions
- Typical repair cost, all makes
- €15-€380
Connect a standard OBD2 adapter (Bluetooth LE on iPhone) to your Saab and Skanyx tells you what P0111 means on that engine, whether it is safe to keep driving, and what the fix should cost. Free on iPhone and Android.
Get Skanyx freeWhat does P0111 mean on a Saab?
The Quick Answer above is the generic definition. What follows is the model-specific detail for the Saab models that log P0111.
Saab 9-3 (second generation)
2003-2014
Saab's page for the 2009 9-3 with the ME9 control module calls P0111 an intake air temperature performance problem and sets it from three tests: intake air above 100 C for over 5 seconds, intake air and coolant temperature too far apart, and a reading that does not change by more than 2.3 C. It will not run while certain other temperature or network faults (P0112, P0113, P0117, P0118, U0122) are stored, so clear those first.
Source: saabwisonline.com, en.wikipedia.org
Sources
- saabwisonline.com saabwisonline.com/9-3-9440/2009/dtcs/me9/p0111-00
- en.wikipedia.org en.wikipedia.org/wiki/Saab_9-3
What causes P0111 on a Saab?
Beyond the generic causes listed on the main P0111 page, these are the patterns noted for Saab models:
Sensor reading stuck or implausible against coolant
: Saab 9-3 (second generation)
Oxidised connector or retracted pin in the sensor plug
: Saab 9-3 (second generation)
How to diagnose P0111 on a Saab with OBD2
- Let the car stand overnight, then read intake air, coolant and ambient temperature with a scan tool before starting. After a full cold soak all three should agree within a few degrees. A large gap shows which sensor is wrong
- If the intake air value sits at a fixed number that never moves as the engine warms and air flows, the sensor or its connector is the likely fault
- Drive for a few minutes and watch the value. Intake air temperature should rise slightly when stopped in traffic and fall again when moving. A reading that never changes fails the plausibility check
- Find the sensor in the intake duct, or inside the airflow sensor housing, and inspect the plug for corrosion, bent pins and loose fit
- Check the heat soak case: if the code only appears after a hot restart, look at whether the sensor sits close to the manifold or a hot hose
- Compare the coolant temperature sensor reading with a thermometer on the thermostat housing. If it is wrong, fix that first, since this code compares against it
- Replace the sensor or combined unit only after the plug and wiring check out, then clear the code and drive a full warm-up cycle
How much does P0111 cost to fix on a Saab? (EUR)
Estimated repair costs for P0111 in EUR, compiled across makes. Expect Saab parts and labour towards the upper end of each range.
| Repair | Parts Cost | Labor Cost | Total Estimate | DIY Difficulty |
|---|---|---|---|---|
| Clean and reseat sensor connector | €0–€5 | €15–€40 | €15–€45 | Easy |
| Replace intake air temperature sensor | €10–€50 | €15–€50 | €25–€100 | Easy |
| Replace combined airflow and air temperature sensor | €40–€300 | €30–€80 | €70–€380 | Moderate |
| Repair sensor wiring | €5–€25 | €40–€120 | €45–€145 | Moderate |
Prices estimated as of October 2026. Costs vary by region, vehicle, and shop.
Codes related to P0111
These codes are often seen alongside P0111 or point to related issues, on any make:
Looking for the full P0111 reference (all makes, full diagnosis flow, complete repair cost matrix)? See the main P0111 guide