P0112 BMW Code - Intake Air Temperature Sensor 1 Circuit Low Bank 1
Quick Answer
The Intake Air Temperature (IAT) sensor is built into mass air flow sensor or in some vehicles mounted to the air filter duct housing. Common causes include Faulty Intake Air Temperature (IAT) sensor, Dirty air filter, Intake Air Temperature (IAT) sensor harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0112 BMW indicates Intake Air Temperature Sensor 1 Circuit Low Bank 1.
- Common causes
- Common causes include Faulty Intake Air Temperature (IAT) sensor, Dirty air filter, Intake Air Temperature (IAT) sensor harness is open or shorted.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0112 BMW Description
What are the Possible Causes of the DTC P0112 BMW?
- Faulty Intake Air Temperature (IAT) sensor
- Dirty air filter
- Intake Air Temperature (IAT) sensor harness is open or shorted
- Intake Air Temperature (IAT) sensor circuit poor electrical connection
How to Fix the DTC P0112 BMW?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0112 BMW code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0112 BMW code?
Need more information on how to fix the P0112 BMW code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0112 BMW code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0112 BMW Code
1. What does the P0112 code mean on a BMW?
P0112 indicates that the Intake Air Temperature (IAT) Sensor 1 on Bank 1 is reporting a low voltage signal, which typically suggests the sensor is detecting an abnormally low temperature.
2. What are the common symptoms of a P0112 code on a BMW?
Symptoms may include poor engine performance, reduced fuel efficiency, rough idling, difficulty starting, and an illuminated check engine light.
3. What causes the P0112 code on a BMW?
Common causes include a faulty IAT sensor, damaged or corroded wiring, a short circuit, or a problem with the Engine Control Module (ECM).
4. Can a dirty air filter cause a P0112 code?
A dirty air filter is unlikely to directly cause the P0112 code, but it can affect overall airflow and engine performance, which may indirectly contribute to sensor issues.
5. How is the P0112 code diagnosed in a BMW?
A technician will use a scan tool to read the code, inspect the IAT sensor and wiring, check for proper voltage, and test the sensor’s resistance to determine if it’s within specifications.
6. Can I drive my BMW with a P0112 code?
Driving with this code is not recommended as it can lead to poor performance and potentially harm the engine over time if left unresolved.
7. How do you fix the P0112 code on a BMW?
Repairs may include replacing the IAT sensor, repairing or replacing damaged wiring, cleaning the sensor connector, or reprogramming the ECM if needed.
8. Where is the IAT sensor located on a BMW?
The IAT sensor is typically located in the intake manifold or air intake tubing, near the air filter housing.
9. How much does it cost to repair a P0112 code on a BMW?
The cost can range from $50 to $200 for parts and labor, depending on whether the sensor needs replacement or if wiring repairs are required.
10. Can a P0112 code trigger other error codes?
Yes, it may trigger related codes like P0113 (IAT Sensor Circuit High) or codes related to air-fuel mixture problems, as the ECM relies on accurate IAT readings for proper calculations.
Discuss the causes and fixes for P0112 BMW OBDII Code
Code P0112 BMW comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
