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This guide is for Audi A4 B9 3.0 TDI and Audi SQ7 4M 4.0D owners needing to replace or maintain their exhaust temperature sensor. The XEPS250 CI offers a direct fit with specific OEM compatibility, ensuring proper engine management. A key caveat is the need for precise vehicle identification to confirm fitment before purchase.
| Colour | Black |
|---|---|
| Model Part Number | XEPS250 |
| Brand | Ci Ignition |
This sensor is compatible with Audi A4 B9 3.0 TDI (09/2015-08/2018) and Audi SQ7 4M 4.0D (16 to 18). Always verify using the Make Model tool or by checking OEM part numbers.
The sensor features an M14 x 1.5 thread size.
A 17mm spanner is required for installation and removal.
It measures the temperature of exhaust gases before the turbocharger, allowing the Engine Control Unit (ECU) to optimize engine performance, fuel efficiency, and emissions control.
The cable length is 660 mm.
Installation typically requires professional tools and expertise due to its location in the exhaust system. It is recommended to have it installed by a qualified mechanic.
Cross-references include ELTA AUTOMOTIVE EX5392, INTERMOTOR 27363, LEMARK LXT348, LUCAS LGS7224, and MEYLE 114 800 0256.
Verify the sensor's electrical connection is secure and free from corrosion. Inspect the wiring harness for damage. If the connection is good and wiring is intact, the sensor may need replacement. Ensure the correct sensor part number was installed.
Double-check that the correct part number was installed and that it is compatible with the vehicle's make, model, and year. Ensure the sensor was tightened to the correct torque specification and the electrical connector is fully seated.
Confirm the electrical connector is fully plugged in and locked. Check the vehicle's wiring harness for continuity and any shorts to ground or power. If the wiring is confirmed to be sound, the sensor may be faulty.
Compatibility Check: Before purchasing, it is essential to verify that the XEPS250 CI sensor is compatible with your specific vehicle. Use the provided OEM reference numbers (VAG 059906088CP, 059906088DQ) and cross-references (ELTA AUTOMOTIVE EX5392, INTERMOTOR 27363, LEMARK LXT348, LUCAS LGS7224, MEYLE 114 800 0256) to confirm. The Make Model tool is also a vital resource. If unsure, contact customer support for assistance.
Installation: Installation typically requires a professional mechanic. The sensor is located before the exhaust turbocharger and has an M14 x 1.5 thread. A 17mm spanner is needed for removal and tightening. Ensure the engine is cool before attempting any work. Disconnect the battery before unplugging the old sensor to prevent electrical damage. Once the old sensor is removed, screw in the new sensor hand-tight, then use the spanner to tighten it to the manufacturer's recommended torque specification. Reconnect the electrical connector securely.
Care: This sensor is designed to operate in harsh exhaust conditions and generally requires no routine maintenance. However, it is crucial to ensure the exhaust system is free from excessive vibration or physical damage that could compromise the sensor's mounting or wiring. If diagnostic codes related to exhaust temperature are present, inspect the sensor and its wiring for any signs of damage, corrosion, or loose connections during routine vehicle inspections.
