AutoCodes – Audi – P1136 Audi

P1136 Audi Code - Long Term Fuel Trim Add. Fuel B1 System Too Lean

Quick Answer

This fault code is stored in the Engine Control Module (ECM) when the ECM is no longer capable of controlling the air-fuel ratio. Common causes include Intake air leak, Faulty O2 Sensor, Faulty Mass Air Flow (MAF) Sensor. 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 Audi indicates Long Term Fuel Trim Add. Fuel B1 System Too Lean.
Common causes: Common causes include Intake air leak, Faulty O2 Sensor, Faulty Mass Air Flow (MAF) Sensor.
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 31,226

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 Jul 11, 2020

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P1136 Audi Description

This fault code is stored in the Engine Control Module (ECM) when the ECM is no longer capable of controlling the air-fuel ratio. For the correct operation of the catalytic converter, the ECM is required to keep the Air-Fuel Ratio (AFR) at approximately lambda 1; this equates to an AFR of 14.7:1 by mass. This is achieved by trimming the fuel mixture to the required amount to cater for slight anomalies during normal operating conditions. However, when a fault causes the fuel trim to exceed a predetermined level the malfunction indicator light is illuminated and a limited operating strategy is employed. The pre-catalyst exhaust gas oxygen sensor is the primary component used for calculating the fuel trim once the system enters closed-loop control. The fuel trim data can be displayed as a percentage, either positive or negative.
This Diagnostic Trouble Code (DTC) can be caused by a faulty mass airflow sensor, fuel pressure regulator, fuel pump, exhaust or intake leaks, secondary air injection leaks, or vacuum leaks. Additionally, any mechanical faults can cause this DTC as well. Common failure points associated with this code are a damaged EVAP purge regulator valve, brake booster, and hoses, electric vacuum pump (if equipped), PVC or ventilation system.

OBDII Code P1136 Audi - Long Term Fuel Trim Add. Fuel B1 System Too Lean - AutoCodes.com — P1136 Audi Code - Long Term Fuel Trim Add. Fuel B1 System Too Lean

What does this mean?

What are the Possible Causes of the DTC P1136 Audi?

Intake air leak
Faulty O2 Sensor
Faulty Mass Air Flow (MAF) Sensor
O2 Sensor harness is open or shorted
O2 Sensor circuit poor electrical connection

How to Fix the DTC P1136 Audi?

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 does this mean?

Code Tech Notes

2002 Volkswagen Passat

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1136 Audi 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 P1136 Audi code? Get Access to Factory Service Manuals

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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 P1136 Audi Code

1. What are the common symptoms of OBDII code P1136 in an Audi?

- Common symptoms include rough idling, poor fuel economy, engine hesitation, and possible stalling.

2. What are the possible causes of OBDII code P1136 in an Audi?

- The code P1136 typically indicates a vacuum leak, faulty oxygen sensor, intake air leak, or a problem with the fuel delivery system.

3. How can I diagnose the cause of OBDII code P1136 in my Audi?

- Use a diagnostic scanner to access the code and check for any related codes. Perform a visual inspection for leaks, test the oxygen sensor, and check the fuel pressure.

4. What are some repair tips for fixing OBDII code P1136 in an Audi?

- Repair or replace any vacuum hoses or gaskets that are leaking. Replace the oxygen sensor if faulty, fix any intake air leaks, and ensure proper fuel delivery.

5. Can I drive my Audi with OBDII code P1136?

- It is not recommended to drive the vehicle for an extended period with this code as it can lead to poor engine performance and potential damage.

6. Will resetting the OBDII code P1136 in my Audi make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not fixed, the code will likely reappear.

7. How much does it typically cost to repair OBDII code P1136 in an Audi?

- The cost of repairs can vary depending on the exact cause, but it is advisable to budget for a diagnostic fee and potential replacement of parts like sensors or hoses.

8. Can a DIY enthusiast fix OBDII code P1136 in an Audi themselves?

- Some simple repairs like replacing vacuum hoses can be done by DIY enthusiasts, but more complex issues may require professional diagnosis and repair.

9. Is OBDII code P1136 a serious issue in an Audi?

- While it may not cause immediate harm, ignoring the code can lead to decreased engine performance and potential long-term damage if left unresolved.

10. How often should I check for OBDII code P1136 in my Audi?

- It is recommended to regularly scan for codes, especially if you notice any symptoms or changes in engine performance, to catch and address issues promptly.