AutoCodes – Lincoln – P2257 Lincoln

P2257 Lincoln Code - Secondary Air Injection System Control 'A' 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: P2257 Lincoln indicates Secondary Air Injection System Control 'A' 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 1,199

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 P2257 Lincoln 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 P2257 Lincoln - Secondary Air Injection System Control 'A' Circuit Low - AutoCodes.com — P2257 Lincoln Code - Secondary Air Injection System Control 'A' Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2257 Lincoln?

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 P2257 Lincoln?

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 P2257 Lincoln 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 more information on how to fix the P2257 Lincoln code? Get Access to Factory Service Manuals

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 P2257 Lincoln Code

1. What does the OBDII code P2257 mean on a Lincoln vehicle?

P2257 indicates that there is a low voltage or malfunction in the Secondary Air Injection System Control 'A' Circuit, which is responsible for introducing additional air into the exhaust to reduce emissions.

2. What are the common symptoms of code P2257 in a Lincoln?

Symptoms may include an illuminated check engine light, poor fuel efficiency, failed emissions tests, and in some cases, reduced engine performance.

3. What causes the P2257 code to appear on a Lincoln?

Common causes include a faulty secondary air injection pump, damaged wiring or connectors in the circuit, a failed relay, or a malfunctioning control module.

4. Can I drive my Lincoln with the P2257 code active?

While the vehicle may still be drivable, ignoring this code can lead to increased emissions and potential damage to the catalytic converter over time.

5. How is the P2257 code diagnosed in a Lincoln?

A technician will typically use a scan tool to confirm the code, inspect wiring and connectors for damage, test the secondary air injection pump, and check the relay and control module functionality.

6. What repairs can fix the P2257 code on a Lincoln?

Repairs may include replacing a faulty air injection pump, repairing damaged wiring or connectors, replacing a defective relay, or reprogramming or replacing the control module.

7. How much does it cost to fix the P2257 code on a Lincoln?

Repair costs can vary but may range from $150 to $500 depending on whether the issue is with the pump, wiring, or other components.

8. What tools are needed to troubleshoot the P2257 code on a Lincoln?

Common tools include an OBDII scanner, multimeter for electrical testing, and basic hand tools for inspecting and repairing wiring or components.

9. Will clearing the P2257 code solve the problem on my Lincoln?

Clearing the code without addressing the root cause will only temporarily turn off the check engine light, and the issue will likely return.

10. How can I prevent the P2257 code from recurring in my Lincoln?

Regular vehicle maintenance, including checking and cleaning electrical connectors, ensuring proper operation of the air injection system, and addressing any issues promptly, can help prevent this code from recurring.