P115E – BMW DTC

BMW DTC P115E – Intake Air Temperature Sensor 1 Gradient Implausible (Bank 1)

DTC P115E meaning on BMW

DTC P115E indicates an issue with the Intake Air Temperature Sensor 1 Gradient on Bank 1 in a BMW vehicle. This fault code suggests that the ECM (Engine Control Module) has detected an implausible change in the gradient of the intake air temperature sensor signal on Bank 1.

BMW DTC P115E symptoms

Symptoms of DTC P115E in a BMW may include:

• Check Engine Light illuminated
• Reduced engine performance
• Poor fuel efficiency
• Rough idling or stalling

BMW DTC P115E causes

Possible causes of DTC P115E on a BMW include:

• Faulty intake air temperature sensor
• Wiring or connector issues in the intake air temperature sensor circuit
• ECM software or hardware problems

BMW DTC P115E seriousness

While DTC P115E may not cause immediate drivability issues, it can lead to reduced engine performance and fuel efficiency if left unresolved. It is recommended to address this fault code promptly to prevent further complications.

How to diagnose DTC P115E on BMW

To diagnose DTC P115E on a BMW, you can perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the intake air temperature sensor and its wiring for any visible damage
3. Check the sensor’s resistance and voltage values using a multimeter
4. Perform a visual inspection of the ECM connectors and wiring related to the intake air temperature sensor

How to fix DTC P115E on BMW

To fix DTC P115E on a BMW, you can consider the following actions:

1. Replace the faulty intake air temperature sensor
2. Repair or replace any damaged wiring or connectors in the sensor circuit
3. Update the ECM software if necessary

How to erase DTC P115E on BMW

To erase DTC P115E on a BMW, you can use a diagnostic scanner to clear the fault code after addressing the underlying issue. Once the repair or replacement is completed, you can reset the ECM and erase the fault code to turn off the Check Engine Light.

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

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