P2259 Code - Secondary Air Injection System Control 'B' Circuit Low
Quick Answer
The P2259 diagnostic trouble code (DTC) signifies an issue with the Secondary Air Injection System Control 'B' Circuit being detected as too low by the vehicle's onboard diagnostics system. Common causes include Faulty Secondary Air Injection Pump: A malfunctioning secondary air injection pump can trigger the P2259 code, Defective Secondary Air Injection System Control Valve: A faulty control valve within the secondary air injection system can lead to this code being detected, Wiring or Connector Issues: Damaged wiring or connectors in the circuit can cause a disruption in the secondary air injection system control 'B' circuit. 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 indicates Secondary Air Injection System Control 'B' Circuit Low.
- Common causes
- Common causes include Faulty Secondary Air Injection Pump: A malfunctioning secondary air injection pump can trigger the P2259 code, Defective Secondary Air Injection System Control Valve: A faulty control valve within the secondary air injection system can lead to this code being detected, Wiring or Connector Issues: Damaged wiring or connectors in the circuit can cause a disruption in the secondary air injection system control 'B' circuit.
- 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 P2259 Description
The P2259 diagnostic trouble code (DTC) signifies an issue with the Secondary Air Injection System Control 'B' Circuit being detected as too low by the vehicle's onboard diagnostics system. This system is responsible for injecting fresh air into the exhaust stream to help reduce harmful emissions. The 'B' circuit specifically refers to a particular component or sensor within the secondary air injection system that is not functioning properly.
Common Causes of P2259
- Faulty Secondary Air Injection Pump: A malfunctioning secondary air injection pump can trigger the P2259 code.
- Defective Secondary Air Injection System Control Valve: A faulty control valve within the secondary air injection system can lead to this code being detected.
- Wiring or Connector Issues: Damaged wiring or connectors in the circuit can cause a disruption in the secondary air injection system control 'B' circuit.
- ECM Malfunction: A problem with the engine control module (ECM) can also be a potential cause of the P2259 code.
Symptoms of P2259
- Check Engine Light: The most common symptom associated with the P2259 code is the illumination of the check engine light on the vehicle's dashboard.
- Decreased Engine Performance: The vehicle may experience a decrease in engine power and overall performance.
- Rough Idle: The engine may idle roughly or inconsistently when the secondary air injection system is malfunctioning.
- Increased Emissions: The vehicle may produce higher emissions than usual, leading to a failed emissions test.
How to Fix P2259
- Diagnose the Issue: Use an OBD-II scanner to retrieve the specific trouble code and identify the source of the problem within the secondary air injection system.
- Inspect Components: Check the secondary air injection pump, control valve, wiring, and connectors for any signs of damage or malfunction.
- Replace Faulty Components: Replace any faulty components identified during the inspection, such as the secondary air injection pump, control valve, or damaged wiring.
- Clear the Code: After repairing the issue, clear the diagnostic trouble code from the vehicle's ECM using the OBD-II scanner.
- Test Drive: Take the vehicle for a test drive to ensure that the repair has resolved the issue and that the check engine light does not reappear.
Cost to Fix P2259
The typical repair costs for addressing the P2259 code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of replacing a faulty secondary air injection pump or control valve can range from $200 to $600, including parts and labor. If wiring or connectors need to be replaced, the cost may increase slightly. Additionally, diagnostic time and labor rates at auto repair shops can vary, typically ranging between $80 and $150 per hour. It's recommended to consult with a professional mechanic to get a more accurate estimate based on your vehicle's make and model, as well as the local labor rates in your area.
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Code P2259 Information for Specific Makes
- P2259 Dodge — Secondary Air Injection System Control 'B' Circuit Low
- P2259 Ford — Secondary Air Injection System Control 'B' Circuit Low
- P2259 Lincoln — Secondary Air Injection System Control 'B' Circuit Low
- P2259 Mazda — Secondary Air Injection System Control 'B' Circuit Low
- P2259 Mercury — Secondary Air Injection System Control 'B' Circuit Low
Frequently Asked Questions about P2259 Code
No Frequently Asked Questions about P2259 Code found.
Discuss the causes and fixes for P2259 OBDII Code
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Have a Mazda rx8 code p2259 replaced spark.plugs and wires car sometimes will die in traffic
Runs rough
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