AutoCodes – Volvo – P0073 Volvo

P0073 Volvo Code - Outside Temperature Sensor Signal Too Low Or Too High

Quick Answer

The Engine Control Module (ECM) monitors the Outside Temperature Sensor. Common causes include Faulty Outside Temperature Sensor, Outside Temperature Sensor harness is open or shorted, Outside 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 Volvo indicates Outside Temperature Sensor Signal Too Low Or Too High.
Common causes: Common causes include Faulty Outside Temperature Sensor, Outside Temperature Sensor harness is open or shorted, Outside 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 5,197

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 23, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0073 Volvo Description

The Engine Control Module (ECM) monitors the Outside Temperature Sensor. If the control module receives a signal from the outside temperature sensor corresponding to a temperature lower than -39 °C (-38.2 °F) (low signal) or higher than +129 °C (264.2 °F) (high signal) the control module interprets it as a fault and Diagnostic Trouble Code (DTC) is stored.

OBDII Code P0073 Volvo - Outside Temperature Sensor Signal Too Low Or Too High - AutoCodes.com — P0073 Volvo Code - Outside Temperature Sensor Signal Too Low Or Too High

What does this mean?

What are the Possible Causes of the DTC P0073 Volvo?

Faulty Outside Temperature Sensor
Outside Temperature Sensor harness is open or shorted
Outside Temperature Sensor circuit poor electrical connection

How to Fix the DTC P0073 Volvo?

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 does this mean?

Code Tech Notes

Volvo Code: ECM-1100

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0073 Volvo 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.

Need more information about the P0073 Volvo code?

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

Need Help with the Code?

Get the P0073 Volvo 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 Volvo Code

1. What are the common symptoms of OBDII code P0073 in a Volvo related to the outside temperature sensor?

The common symptoms include incorrect readings on the temperature display, erratic temperature readings, and issues with the climate control system.

2. What can cause the OBDII code P0073 in a Volvo indicating an outside temperature sensor signal too low or too high?

Possible causes include a faulty outside temperature sensor, damaged wiring or connectors, a malfunctioning climate control module, or issues with the sensor's power supply.

3. How can I diagnose the OBDII code P0073 in my Volvo?

Diagnosing the code involves checking the outside temperature sensor for proper operation, inspecting the wiring and connectors for damage, and testing the climate control module for any faults.

4. Can I drive my Volvo with the OBDII code P0073 present?

While it may be possible to continue driving the vehicle with this code, it is recommended to address the issue promptly to avoid potential problems with the climate control system and accurate temperature readings.

5. What are some repair tips for resolving the OBDII code P0073 in a Volvo?

Repair tips may include replacing the outside temperature sensor, repairing or replacing damaged wiring or connectors, resetting the climate control module, or addressing any power supply issues to the sensor.

6. Will resetting the OBDII code P0073 in my Volvo make the problem go away?

Resetting the code may temporarily clear the fault, but if the underlying issue with the outside temperature sensor or related components is not resolved, the code is likely to reappear.

7. Can extreme weather conditions affect the outside temperature sensor and trigger the OBDII code P0073 in a Volvo?

Yes, extreme temperatures can impact the performance of the outside temperature sensor and lead to incorrect readings, potentially triggering the P0073 code.

8. How important is it to fix the OBDII code P0073 in a Volvo promptly?

It is important to address the code promptly to ensure accurate temperature readings, proper functioning of the climate control system, and to prevent any potential issues that may arise from a faulty outside temperature sensor signal.

9. Is the outside temperature sensor signal related to other systems in the Volvo?

Yes, the outside temperature sensor signal is used by various systems, including the climate control system, automatic transmission, and engine management system, to optimize performance and efficiency.

10. Can a DIY enthusiast repair the OBDII code P0073 in a Volvo, or is professional assistance recommended?

While some basic diagnostics and repairs can be done by a DIY enthusiast, resolving complex issues related to the outside temperature sensor may require professional assistance to ensure accurate diagnosis and proper repair.