AutoCodes – Land Rover – P1172 Land Rover

P1172 Land Rover Code - LH Bank Lambda Control Adaption Over Time Too Small

Quick Answer

The Engine Control Module (ECM) has the ability to adapt the values it uses to control certain outputs. Common causes include Faulty Heated Oxygen Sensor, Heated Oxygen Sensor harness is open or shorted, Heated Oxygen Sensor 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: P1172 Land Rover indicates LH Bank Lambda Control Adaption Over Time Too Small.
Common causes: Common causes include Faulty Heated Oxygen Sensor, Heated Oxygen Sensor harness is open or shorted, Heated Oxygen Sensor 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 6,271

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 May 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1172 Land Rover Description

The Engine Control Module (ECM) has the ability to adapt the values it uses to control certain outputs. This capability ensures the Engine Management System (EMS) can meet emissions legislation and improve the refinement of the engine throughout its operating range.
The components which have adaptions associated with them are:The APP sensor,The HO2S,The MAF/IAT sensor,The CKP sensor and Electric throttle body.

OBDII Code P1172 Land Rover - LH Bank Lambda Control Adaption Over Time Too Small - AutoCodes.com — P1172 Land Rover Code - LH Bank Lambda Control Adaption Over Time Too Small

What does this mean?

What are the Possible Causes of the DTC P1172 Land Rover?

Faulty Heated Oxygen Sensor
Heated Oxygen Sensor harness is open or shorted
Heated Oxygen Sensor circuit poor electrical connection

How to Fix the DTC P1172 Land Rover?

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 P1172 Land Rover 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.

Need more information about the P1172 Land Rover 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 P1172 Land Rover Code

1. What are the common symptoms of OBDII code P1172 in a Land Rover?

- Common symptoms include rough idling, decreased fuel efficiency, and potential engine misfires.

2. What does the OBDII code P1172 in a Land Rover indicate?

- The code indicates that the LH bank lambda control adaptation over time is too small, meaning the engine is not receiving the correct air-fuel mixture.

3. What are the possible causes of OBDII code P1172 in a Land Rover?

- Causes may include a faulty oxygen sensor, vacuum leaks, fuel system issues, or a malfunctioning catalytic converter.

4. How can I diagnose the cause of OBDII code P1172 in my Land Rover?

- Diagnosis typically involves checking the oxygen sensor, inspecting for vacuum leaks, testing the fuel system pressure, and evaluating the catalytic converter's performance.

5. Can driving with OBDII code P1172 in a Land Rover cause further damage?

- Continuing to drive with this code may lead to decreased engine performance, increased emissions, and potential damage to the catalytic converter over time.

6. How can I repair OBDII code P1172 in my Land Rover?

- Repair methods may include replacing the oxygen sensor, fixing any vacuum leaks, addressing fuel system issues, or replacing a faulty catalytic converter.

7. Is it safe to reset the OBDII code P1172 in my Land Rover using a scanner?

- While clearing the code may temporarily turn off the Check Engine light, it is essential to diagnose and address the underlying issue to prevent further problems.

8. Can a DIY enthusiast fix OBDII code P1172 in a Land Rover?

- Depending on the underlying cause, some repairs related to this code may be manageable for experienced DIY enthusiasts, such as replacing an oxygen sensor.

9. How much does it typically cost to repair OBDII code P1172 in a Land Rover at a mechanic?

- The cost of repairs can vary based on the specific cause, but it may range from a couple of hundred to a few thousand dollars, including parts and labor.

10. Will OBDII code P1172 cause my Land Rover to fail an emissions test?

- Yes, if left unresolved, this code can affect the vehicle's emissions output and may lead to a failed emissions test. It is essential to address the issue promptly.