P1136 Volkswagen Code - Long Term Fuel Trim Add. Fuel B1 System Too Lean
Quick Answer
The P1136 diagnostic trouble code (DTC) for Volkswagen vehicles indicates that the Long Term Fuel Trim Additive Fuel Bank 1 System is too lean. Common causes include Vacuum leaks in the intake system, Faulty fuel injector, Dirty or clogged fuel filter. 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
- P1136 Volkswagen indicates Long Term Fuel Trim Add. Fuel B1 System Too Lean.
- Common causes
- Common causes include Vacuum leaks in the intake system, Faulty fuel injector, Dirty or clogged fuel filter.
- 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 P1136 Volkswagen Description
The P1136 diagnostic trouble code (DTC) for Volkswagen vehicles indicates that the Long Term Fuel Trim Additive Fuel Bank 1 System is too lean. This means that the engine control module (ECM) has detected a persistent lean condition in the fuel mixture being delivered to the engine. The ECM adjusts the fuel mixture based on feedback from various sensors in the engine, such as the oxygen sensors, to ensure optimal performance and emissions.
Common Causes of P1136 Volkswagen
- Vacuum leaks in the intake system
- Faulty fuel injector
- Dirty or clogged fuel filter
- Malfunctioning mass air flow sensor
- Issues with the fuel pump
Symptoms of P1136 Volkswagen
- Poor fuel efficiency
- Rough idling or stalling
- Engine misfires
- Lack of power during acceleration
- Illumination of the check engine light
How to Fix P1136 Volkswagen
- Perform a thorough inspection of the intake system for any vacuum leaks and repair as necessary.
- Test the fuel injector for proper operation and replace if faulty.
- Replace the fuel filter if it is dirty or clogged.
- Clean or replace the mass air flow sensor if it is malfunctioning.
- Test the fuel pump for proper pressure and flow and replace if necessary.
Cost to Fix P1136 Volkswagen
The cost of repairing a P1136 code can vary depending on the specific cause of the lean condition and the labor rates at the auto repair shop. In general, the cost of parts such as a fuel injector, fuel filter, mass air flow sensor, or fuel pump can range from $100 to $500, depending on the quality and brand of the parts. Additionally, labor costs can range from $200 to $500 or more, depending on the shop's hourly rate and the complexity of the repair. Overall, the total cost for repairing a P1136 code can range from $300 to $1000 or more. It is advisable to consult with a trusted mechanic for a more accurate cost estimate based on your specific vehicle and location.
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