AutoCodes – Generic – C2022

C2022 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 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 2,548

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

What does this mean?

What are the Possible Causes of the DTC C2022?

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

How to Fix the DTC C2022?

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 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 C2022 code?

Need more information on how to fix the C2022 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C2022 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C2022 Subaru — Tire 2 Air Pressure Decrease

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 Code

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

- The common symptoms include a warning light on the dashboard indicating low tire pressure, uneven tire wear, and decreased fuel efficiency.

2. What are the possible causes of OBDII code C2022?

- The code C2022 is typically triggered by a malfunction in the Tire Pressure Monitoring System (TPMS) sensor for Tire 2, low tire pressure, or a faulty TPMS module.

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

- Use a TPMS tool to check the tire pressure in Tire 2, inspect the TPMS sensor for any damage or corrosion, and scan the TPMS module for error codes to diagnose the issue.

4. Can I reset OBDII code C2022 myself?

- Yes, you can try resetting the code using an OBDII scanner or by fixing the underlying issue causing the code to appear. If the problem persists, it's recommended to seek professional help.

5. How do I repair OBDII code C2022 related to Tire 2 Air Pressure Decrease?

- Repair options may include inflating the tire to the recommended pressure, replacing the TPMS sensor in Tire 2, or recalibrating the TPMS module to resolve the issue.

6. Is it safe to continue driving with OBDII code C2022 present?

- It is generally safe to drive with the code C2022, but it's important to address the low tire pressure or TPMS sensor issue promptly to ensure optimal vehicle performance and safety.

7. Can weather changes affect OBDII code C2022?

- Yes, drastic temperature changes can impact tire pressure and trigger the Tire 2 Air Pressure Decrease code. It's recommended to monitor tire pressure regularly in different seasons.

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

- It's advisable to check tire pressure at least once a month or before long trips to prevent issues like low tire pressure triggering the OBDII code C2022.

9. Are there any preventive measures to avoid OBDII code C2022 in the future?

- Regularly checking tire pressure, maintaining proper inflation levels, inspecting TPMS sensors for damage, and addressing any issues promptly can help prevent the recurrence of code C2022.

10. Can a faulty TPMS sensor cause OBDII code C2022 to appear?

- Yes, a malfunctioning TPMS sensor in Tire 2 can lead to inaccurate tire pressure readings and trigger the OBDII code C2022 for Tire 2 Air Pressure Decrease.