Audi DTC P1145 – Mass or Volume Air Flow Circ Short to B+
DTC P1145 meaning on Audi
DTC P1145 on an Audi indicates a Mass or Volume Air Flow Circuit Short to B+. This means that there is an electrical issue in the circuit related to the Mass Air Flow (MAF) sensor, where the signal wire is shorted to the battery positive voltage.
Audi DTC P1145 symptoms
Symptoms of DTC P1145 on an Audi may include rough idling, engine stalling, hesitation during acceleration, decreased fuel efficiency, and in some cases, the Check Engine Light may illuminate on the dashboard.
Audi DTC P1145 causes
The common causes of DTC P1145 on an Audi are a faulty MAF sensor, damaged wiring or connectors in the MAF sensor circuit, or a short to battery positive in the MAF sensor circuit.
Audi DTC P1145 seriousness
While DTC P1145 may not cause immediate harm to the engine, it can lead to poor engine performance and decreased fuel efficiency. Ignoring this DTC can potentially cause further damage to the engine over time.
How to diagnose DTC P1145 on Audi
To diagnose DTC P1145 on an Audi, a mechanic would typically start by inspecting the MAF sensor and its wiring for any visible damage. They may also use a multimeter to test the continuity and resistance in the MAF sensor circuit to identify the source of the short to B+.
How to fix DTC P1145 on Audi
The most common fix for DTC P1145 on an Audi is to replace the faulty MAF sensor. Additionally, repairing any damaged wiring or connectors in the MAF sensor circuit can help resolve the issue. Once the repairs are made, clearing the DTC and resetting the Check Engine Light should be performed.
How to erase DTC P1145 on Audi
To erase DTC P1145 on an Audi, a diagnostic scanner or OBD-II scanner can be used to clear the code from the vehicle’s computer. After the repairs have been made and the issue resolved, clearing the DTC will reset the Check Engine Light and ensure that the fault code does not reappear.
Recommended tools for Audi diagnostics
Explore our expert picks: The Best OBD2 Scanners for 2025
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.