AutoCodes – Dodge – P2259 Dodge

P2259 Dodge 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 Dodge 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 3,061

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

What does this mean?

What are the Possible Causes of the DTC P2259 Dodge?

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 Dodge?

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 Dodge 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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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 Dodge Code

1. What does the OBDII code P2259 mean for a Dodge vehicle?

P2259 indicates a low circuit issue in the Secondary Air Injection System Control 'B', meaning the system is not functioning as expected to reduce emissions.

2. What are the common symptoms of the P2259 code in a Dodge?

Symptoms may include the check engine light turning on, reduced engine performance, increased emissions, and possibly a failed emissions test.

3. What causes the P2259 code to appear?

Common causes include a faulty secondary air injection pump, damaged wiring or connectors, a stuck-open control solenoid valve, or a blown fuse in the air injection system.

4. How do I diagnose the P2259 code on my Dodge?

Start by checking the secondary air injection pump, solenoid valve, wiring, and connectors for damage. Use a multimeter to test voltage and continuity in the circuit.

5. Can I drive my Dodge with the P2259 code?

While it may be possible to drive with this code, it is not recommended as it can lead to increased emissions, reduced fuel efficiency, and potential engine damage over time.

6. How can I fix the P2259 code on my Dodge?

Repair options include replacing the secondary air injection pump, repairing or replacing damaged wiring or connectors, or replacing the control solenoid valve.

7. How much does it cost to fix the P2259 code?

Repair costs vary depending on the cause. Replacing the air injection pump can cost $300–$800, while wiring repairs or solenoid replacements may be less expensive.

8. What tools are needed to diagnose and repair the P2259 code?

Basic tools include an OBDII scanner, a multimeter for electrical testing, and potentially hand tools for part removal and replacement.

9. How can I prevent the P2259 code from recurring?

Regular maintenance, such as inspecting wiring and ensuring the air injection system components are clean and functional, can help prevent this code.

10. Is the P2259 code related to emissions testing failure?

Yes, the P2259 code can cause your Dodge to fail an emissions test since it affects the proper functioning of the secondary air injection system designed to reduce pollutants.