P1138 Lincoln Code - Lack Of Heated Oxygen Sensor Switches Bank 1 Sensor 2 Switch Indicates Rich
Quick Answer
The P1138 diagnostic trouble code for Lincoln vehicles indicates a lack of heated oxygen sensor switches on Bank 1 Sensor 2, with the switch indicating a rich air-fuel mixture. Common causes include Malfunctioning fuel injector, Faulty oxygen sensor, Vacuum leak. 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
- P1138 Lincoln indicates Lack Of Heated Oxygen Sensor Switches Bank 1 Sensor 2 Switch Indicates Rich.
- Common causes
- Common causes include Malfunctioning fuel injector, Faulty oxygen sensor, Vacuum leak.
- 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 P1138 Lincoln Description
The P1138 diagnostic trouble code for Lincoln vehicles indicates a lack of heated oxygen sensor switches on Bank 1 Sensor 2, with the switch indicating a rich air-fuel mixture. This code typically means that the oxygen sensor after the catalytic converter is detecting an excessively rich air-fuel mixture, which can lead to poor engine performance, increased emissions, and potential damage to the catalytic converter.
Common Causes of P1138 Lincoln
- Malfunctioning fuel injector
- Faulty oxygen sensor
- Vacuum leak
- Issues with the air intake system
- Engine misfire
Symptoms of P1138 Lincoln
- Decreased fuel efficiency
- Rough idling or stalling
- Hesitation during acceleration
- Check Engine Light illuminated
- Increased emissions
How to Fix P1138 Lincoln
- Diagnose the issue by using a scan tool to read the code and determine the specific cause of the rich air-fuel mixture.
- Inspect the oxygen sensor after the catalytic converter to check for any damage or contamination that may be causing incorrect readings.
- Check the fuel injectors for proper operation and replace any that are malfunctioning.
- Inspect the air intake system for leaks or restrictions and repair as necessary.
- Clear the diagnostic trouble code and test drive the vehicle to ensure that the issue has been resolved.
Cost to Fix P1138 Lincoln
The cost of repairing a P1138 code on a Lincoln vehicle can vary depending on the specific cause of the issue. In general, the cost of parts such as oxygen sensors, fuel injectors, or air intake components can range from $100 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour, with the total repair cost potentially amounting to several hundred dollars. It's important to consult with a qualified mechanic to get an accurate estimate based on the specific diagnosis and repair needed for your vehicle.
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