AutoCodes – Subaru – C2022 Subaru

C2022 Subaru Code - Tire 2 Air Pressure Decrease

Quick Answer

The Tire Pressure Monitor (TPM) system checks the tire pressures of all 4 road wheels when the vehicle is driven at speeds above 25 mph (40 km/h), and warns in the event of a loss of pressure by means of a low tire pressure warning light. Common causes include Tire pressure not to factory specifications, Faulty Tire Pressure Transmitter, Faulty Tire Pressure Monitor System (TPMS) Control Module. 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: C2022 Subaru indicates Tire 2 Air Pressure Decrease.
Common causes: Common causes include Tire pressure not to factory specifications, Faulty Tire Pressure Transmitter, Faulty Tire Pressure Monitor System (TPMS) Control Module.
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 4,238

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C2022 Subaru Description

The Tire Pressure Monitor (TPM) system checks the tire pressures of all 4 road wheels when the vehicle is driven at speeds above 25 mph (40 km/h), and warns in the event of a loss of pressure by means of a low tire pressure warning light. A sensor installed in each wheel will indicate when tire pressure is severely low. The TPM system will activate only when the vehicle is driven. The Tire Pressure Monitor System (TPMS) Control Module monitors the tire pressure at each wheel. The TPMS Control Module sets the OBDII code when the tire pressure signal is not to factory specifications.

OBDII Code C2022 Subaru - Tire 2 Air Pressure Decrease - AutoCodes.com — C2022 Subaru Code - Tire 2 Air Pressure Decrease

What does this mean?

What are the Possible Causes of the DTC C2022 Subaru?

Tire pressure not to factory specifications
Faulty Tire Pressure Transmitter
Faulty Tire Pressure Monitor System (TPMS) Control Module

How to Fix the DTC C2022 Subaru?

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

When the low tire pressure warning light illuminates, immediately check the air pressure of all tires and adjust to the specified pressure. After adjusting air pressure, drive the vehicle at 25 mph (40 km/h) or more to start TPM system re-checking of the tire inflation pressures. Warning light should turn off in a few minutes.
If the warning light is still on after adjusting tire pressure, check for a damaged tire and repair as necessary. If warning light blinks 25 times and then illuminates, and there is not a tire without a tire pressure sensor installed, there is a malfunction in the TPM system. See appropriate manufacturer service information.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C2022 Subaru 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 Help with the Code?

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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 C2022 Subaru Code

1. What are the common symptoms of OBDII code C2022 Subaru (Tire 2 Air Pressure Decrease)?

The common symptoms include a dashboard warning light for low tire pressure, uneven tire wear, and decreased fuel efficiency.

2. What could cause OBDII code C2022 Subaru to trigger?

Possible causes include a faulty tire pressure sensor, a leak in the tire or valve stem, or issues with the tire pressure monitoring system (TPMS).

3. How can I diagnose the cause of OBDII code C2022 Subaru?

You can start by checking the air pressure in all tires, inspecting for any visible damage or leaks, and using a TPMS diagnostic tool to determine if the sensor is functioning properly.

4. Can I drive my Subaru with OBDII code C2022 (Tire 2 Air Pressure Decrease)?

It is not recommended to drive with low tire pressure as it can affect the vehicle's handling and safety. It's best to address the issue promptly.

5. How can I reset OBDII code C2022 Subaru after fixing the tire pressure issue?

Once you have addressed the low tire pressure problem, you can reset the code using an OBDII scanner or by disconnecting the car's battery for a few minutes.

6. What are some repair tips for fixing OBDII code C2022 Subaru?

Repair tips include properly inflating the affected tire to the recommended pressure, checking for and repairing any leaks, and ensuring the TPMS is functioning correctly.

7. Can extreme weather conditions trigger OBDII code C2022 Subaru?

Yes, extreme temperatures can cause fluctuations in tire pressure, leading to the triggering of the code. It's important to regularly check tire pressure in such conditions.

8. Is it necessary to replace the tire pressure sensor for OBDII code C2022 Subaru?

If the sensor is found to be faulty during diagnosis, it may be necessary to replace it to resolve the issue and prevent further triggering of the code.

9. How often should I check my tire pressure to prevent OBDII code C2022 Subaru?

It is recommended to check your tire pressure at least once a month and before long trips to prevent issues like OBDII code C2022 from occurring.

10. Are there any common mistakes to avoid when dealing with OBDII code C2022 Subaru?

Common mistakes include ignoring the warning light, overinflating tires to compensate for low pressure, and not addressing the issue promptly, which can lead to further damage.