AutoCodes – BMW – P0073 BMW

P0073 BMW Code - Ambient Sensor Circuit High

Quick Answer

This Diagnostic Trouble Code (DTC) is stored in the Engine Control Module (ECM) when a malfunction is detected with the Ambient Air Temperature Sensor. Common causes include Faulty Ambient Air Temperature Sensor, Ambient Air Temperature Sensor harness is open or shorted, Ambient Air Temperature Sensor circuit poor electrical connection. 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: P0073 BMW indicates Ambient Sensor Circuit High.
Common causes: Common causes include Faulty Ambient Air Temperature Sensor, Ambient Air Temperature Sensor harness is open or shorted, Ambient Air Temperature Sensor circuit poor electrical connection.
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.

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Code Popularity 27,054

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 19, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0073 BMW Description

This Diagnostic Trouble Code (DTC) is stored in the Engine Control Module (ECM) when a malfunction is detected with the Ambient Air Temperature Sensor. This component measures the outside air temperature. A plausibility check is carried out with the ambient air temperature sensor, intake air temperature sensor, and engine coolant temperature sensor.

OBDII Code P0073 BMW - Ambient Sensor Circuit High - AutoCodes.com — P0073 BMW Code - Ambient Sensor Circuit High

What does this mean?

What are the Possible Causes of the DTC P0073 BMW?

Faulty Ambient Air Temperature Sensor
Ambient Air Temperature Sensor harness is open or shorted
Ambient Air Temperature Sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0073 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 P0073 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.

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Need more information on how to fix the P0073 BMW code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0073 BMW code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0073 BMW Code

1. What are the common symptoms of OBDII code P0073 in a BMW related to the ambient sensor circuit high?

- Common symptoms include incorrect ambient temperature readings on the vehicle's display, erratic climate control system operation, and potential activation of the Check Engine Light.

2. What are the possible causes of OBDII code P0073 in a BMW?

- The code P0073 in a BMW can be triggered by a faulty ambient air temperature sensor, a damaged sensor wiring harness, or a malfunctioning climate control module.

3. How serious is OBDII code P0073 in a BMW?

- While code P0073 may not directly impact the drivability of the vehicle, it can lead to inaccuracies in temperature readings and affect the performance of the climate control system.

4. How can I diagnose OBDII code P0073 in my BMW?

- Diagnosis typically involves checking the ambient air temperature sensor and its wiring for any visible damage, as well as using a multimeter to test the sensor's resistance values.

5. What are some repair tips for fixing OBDII code P0073 in a BMW?

- Repairing this code usually involves replacing the ambient air temperature sensor and repairing or replacing any damaged wiring or connectors associated with the sensor circuit.

6. Can I drive my BMW with OBDII code P0073?

- While it may be safe to drive the vehicle with this code, it is recommended to address the issue promptly to ensure accurate temperature readings and proper climate control system operation.

7. How much does it cost to repair OBDII code P0073 in a BMW?

- The cost of repairing code P0073 in a BMW can vary depending on the extent of the issue, but it typically involves replacing the sensor and addressing any wiring issues, which can range from $100 to $300 or more.

8. Will OBDII code P0073 reset itself after repair in a BMW?

- In some cases, the Check Engine Light associated with code P0073 may reset itself after the repair is completed and the issue is resolved. However, it is recommended to clear the code using an OBDII scanner to ensure it does not reappear.

9. Can a DIY enthusiast fix OBDII code P0073 in a BMW?

- Depending on your level of automotive repair experience, replacing the ambient air temperature sensor and addressing wiring issues associated with code P0073 can be a DIY-friendly task with the right tools and resources.

10. Are there any recalls related to OBDII code P0073 in BMW vehicles?

- It is recommended to check with BMW or the National Highway Traffic Safety Administration (NHTSA) to see if there are any recalls related to code P0073 in your specific BMW model.