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P1095 – BMW DTC

BMW DTC P1095 – O2 Sensor Signal Circuit Slow Switching from Lean to Rich and Rich to Lean (Bank 1 Sensor 1)

DTC P1095 meaning on BMW

DTC P1095 on a BMW indicates an issue with the O2 sensor signal circuit for Bank 1 Sensor 1. Specifically, it signifies that the O2 sensor is switching too slowly from a lean to rich air/fuel mixture and vice versa. This can lead to improper fuel mixture adjustments by the engine control module, affecting the vehicle’s performance and emissions.

BMW DTC P1095 symptoms

Symptoms of DTC P1095 on a BMW may include:

  • Check Engine Light (CEL) illuminated
  • Poor fuel economy
  • Engine misfires
  • Rough idling
  • Reduced engine power

BMW DTC P1095 causes

The common causes of DTC P1095 on a BMW include:

  • Faulty O2 sensor (Bank 1 Sensor 1)
  • Wiring or connector issues in the O2 sensor circuit
  • Vacuum leaks
  • Exhaust system leaks
  • Issues with the engine control module

BMW DTC P1095 seriousness

While DTC P1095 may not cause immediate drivability issues, it can lead to poor engine performance, reduced fuel efficiency, and increased emissions. Ignoring this fault can potentially cause damage to other components of the vehicle over time.

How to diagnose DTC P1095 on BMW

To diagnose DTC P1095 on a BMW, you can follow these steps:

  1. Use an OBD-II scanner to retrieve the fault code and freeze frame data.
  2. Inspect the wiring and connectors of the Bank 1 Sensor 1 O2 sensor for any damage or corrosion.
  3. Check for vacuum leaks or exhaust system leaks that could affect the O2 sensor readings.
  4. Perform a visual inspection of the O2 sensor for any physical damage.
  5. If necessary, use a multimeter to test the O2 sensor’s voltage output and response time.

How to fix DTC P1095 on BMW

To fix DTC P1095 on a BMW, you can try the following solutions:

  1. Replace the Bank 1 Sensor 1 O2 sensor with a new, OEM-quality sensor.
  2. Repair any damaged wiring or connectors in the O2 sensor circuit.
  3. Address any vacuum leaks or exhaust system leaks that could be affecting the O2 sensor readings.
  4. If necessary, reprogram or replace the engine control module.

How to erase DTC P1095 on BMW

To erase DTC P1095 on a BMW, you can use an OBD-II scanner to clear the fault code from the vehicle’s memory. After fixing the underlying issue causing the fault code, clearing the code will reset the Check Engine Light and allow the vehicle’s systems to monitor for any new faults.

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

← All BMW Diagnostic Trouble Codes

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