AutoCodes – Mazda – P2259 Mazda

P2259 Mazda Code - Secondary Air Injection System Control 'B' Circuit Low

Quick Answer

An Air Pump is used on the vehicle to lower tail pipe emissions on start-up. Common causes include Faulty Secondary Air System Relay, Secondary Air System Relay harness is open or shorted, Secondary Air System Relay 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: P2259 Mazda indicates Secondary Air Injection System Control 'B' Circuit Low.
Common causes: Common causes include Faulty Secondary Air System Relay, Secondary Air System Relay harness is open or shorted, Secondary Air System Relay 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 4,650

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
Cost to Diagnose
FAQs
Comments
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Code P2259 Mazda Description

An Air Pump is used on the vehicle to lower tail pipe emissions on start-up. The Powertrain Control Module (PCM) grounds the Air Pump Relay Control Circuit which energizes the Air Pump. The PCM also grounds the Air Combination Valve Vacuum Control Solenoid Circuit, which energizes the Air Vacuum Control Solenoid. Vacuum is then applied to both Air Combination Valve Diaphragms which opens the shut-off valves. The PCM enables both circuits simultaneously when Air System operation is desired. When the Air System is active, then Air pump forces fresh air into the exhaust stream in order to accelerate catalyst operation. The AIR combination valves replace the conventional check valves. When the AIR system is inactive the shut-off valves prevent air flow in either direction.

OBDII Code P2259 Mazda - Secondary Air Injection System Control 'B' Circuit Low - AutoCodes.com — P2259 Mazda Code - Secondary Air Injection System Control 'B' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2259 Mazda?

Faulty Secondary Air System Relay
Secondary Air System Relay harness is open or shorted
Secondary Air System Relay circuit poor electrical connection
Faulty Secondary Air System Pump

How to Fix the DTC P2259 Mazda?

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 P2259 Mazda 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 P2259 Mazda Code

1. What are the common symptoms of OBDII code P2259 in a Mazda related to the Secondary Air Injection System Control 'B' Circuit Low?

- Common symptoms include reduced engine performance, rough idling, and an illuminated check engine light.

2. What are some possible causes of the P2259 code in a Mazda's Secondary Air Injection System Control 'B' Circuit Low?

- Potential causes can include a faulty secondary air injection pump, damaged wiring or connectors, or a malfunctioning air injection control module.

3. How serious is the P2259 code in a Mazda and how urgently should it be addressed?

- While the vehicle may still be drivable with this code, it is important to address it promptly to prevent potential damage to the engine or emissions system.

4. Can I continue driving my Mazda with the P2259 code present?

- It is recommended to avoid driving the vehicle for an extended period with this code present to prevent further issues and potential damage.

5. Are there any DIY repair tips for addressing the P2259 code in a Mazda?

- DIY enthusiasts can start by checking the wiring and connectors related to the secondary air injection system for any visible damage before considering component replacement.

6. How can a mechanic diagnose the P2259 code in a Mazda efficiently?

- A mechanic may use a scan tool to retrieve the specific error codes, perform a visual inspection of relevant components, and conduct testing to pinpoint the exact cause.

7. Is it possible to reset the check engine light after addressing the P2259 code in a Mazda?

- Yes, once the underlying issue is resolved and the vehicle's computer registers that the problem is fixed, the check engine light can be reset using a scan tool.

8. What parts of the Secondary Air Injection System should be inspected when troubleshooting the P2259 code in a Mazda?

- Components such as the air injection pump, air injection control module, valves, hoses, and electrical connections should be thoroughly inspected for faults.

9. How much does it typically cost to repair the P2259 code in a Mazda at a professional mechanic or dealership?

- Repair costs can vary depending on the specific cause of the issue, but they may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can the P2259 code in a Mazda be prevented in the future?

- Regular maintenance, including checking and replacing air injection system components as needed, can help prevent the recurrence of the P2259 code in the future.