AutoCodes – Land Rover – P1536 Land Rover

P1536 Land Rover Code - A/C Compressor Request Range/Performance

Quick Answer

Request for Air Condition (A/C) operation is signaled to the Heating and Ventilation Air Conditioning (HVAC) control unit and Engine Control Module (ECM) when the A/C control panel switch is pressed, completing a ground path. Common causes include Faulty Air Condition (A/C) Compressor, Air Condition Compressor harness is open or shorted, Air Condition Compressor 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: P1536 Land Rover indicates A/C Compressor Request Range/Performance.
Common causes: Common causes include Faulty Air Condition (A/C) Compressor, Air Condition Compressor harness is open or shorted, Air Condition Compressor 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 1,254

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jan 19, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1536 Land Rover Description

Request for Air Condition (A/C) operation is signaled to the Heating and Ventilation Air Conditioning (HVAC) control unit and Engine Control Module (ECM) when the A/C control panel switch is pressed, completing a ground path. Battery voltage to A/C control panel switch is supplied via ECM connector. When an A/C operation request is received, the A/C compressor clutch will be engaged based on other operating requirements. If there is an A/C request failure, the A/C system will not work even if all other requirements are met.
The A/C compressor clutch relay is a 4-pin normally open relay located in the engine compartment fuse box. When the ECM grounds the A/C clutch relay coil the switching contacts close o allow the relay contacts to close and the A/C clutch to receive battery voltage. When the ECM opens the ground path, the clutch relay will be de-energized and shut down the A/C compressor clutch. Battery voltage to the A/C clutch relay is supplied via a fuse. Battery voltage to the A/C clutch relay coil is supplied from the main relay. A/C clutch relay coil ground is supplied via ECM. When the relay has energized the output from the switching contacts goes directly to the A/C compressor clutch. If there is an A/C clutch relay failure, the A/C system will not work even if all other requirements are met. If Diagnostic Trouble Code (DTC) P1536 is set, there is an A/C compressor operation request signal range or performance problem caused by a clutch relay open circuit.

OBDII Code P1536 Land Rover - A/C Compressor Request Range/Performance - AutoCodes.com — P1536 Land Rover Code - A/C Compressor Request Range/Performance

What does this mean?

What are the Possible Causes of the DTC P1536 Land Rover?

Faulty Air Condition (A/C) Compressor
Air Condition Compressor harness is open or shorted
Air Condition Compressor circuit poor electrical connection

How to Fix the DTC P1536 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 P1536 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 P1536 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 P1536 Land Rover Code

1. What are common symptoms of OBDII code P1536 related to the A/C Compressor Request Range/Performance issue?

- Common symptoms include poor air conditioning performance, unusual noises coming from the A/C system, and the A/C compressor not engaging properly.

2. What are some possible causes of OBDII code P1536 in a Land Rover?

- Causes may include a faulty A/C compressor, issues with the A/C compressor clutch, low refrigerant levels, electrical problems in the A/C system, or a malfunctioning A/C pressure switch.

3. How can I diagnose the A/C Compressor Request Range/Performance issue associated with OBDII code P1536 in my Land Rover?

- Diagnosis typically involves checking the A/C system for proper refrigerant levels, inspecting the A/C compressor and its components for any damage, and using a scan tool to monitor the A/C system parameters.

4. Can I continue driving my Land Rover with OBDII code P1536 triggered?

- It is not recommended to continue driving with the A/C Compressor Request Range/Performance issue as it may lead to further damage to the A/C system components.

5. What are some repair tips for fixing OBDII code P1536 on a Land Rover?

- Repair tips may include checking and replacing the A/C compressor if necessary, ensuring proper refrigerant levels, inspecting and repairing any damaged wiring in the A/C system, and resetting the fault code after repairs are completed.

6. Is it possible to reset OBDII code P1536 in a Land Rover without fixing the underlying issue?

- While it is possible to clear the fault code temporarily, it is important to address the root cause of the A/C Compressor Request Range/Performance problem to prevent it from reoccurring.

7. How much does it typically cost to repair OBDII code P1536 related to the A/C Compressor Request Range/Performance issue in a Land Rover?

- Repair costs can vary depending on the exact cause of the issue, but they may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can a DIY enthusiast fix OBDII code P1536 on a Land Rover or is it best left to professional mechanics?

- While some aspects of diagnosing and repairing the A/C Compressor Request Range/Performance issue can be tackled by DIY enthusiasts, complex repairs or refrigerant handling should be left to professional mechanics.

9. What steps can I take to prevent OBDII code P1536 related to the A/C Compressor Request Range/Performance issue in my Land Rover?

- Regular maintenance of the A/C system, checking refrigerant levels, addressing any unusual noises or performance issues promptly, and keeping the A/C system clean can help prevent this code from occurring.

10. How long does it typically take to repair OBDII code P1536 associated with the A/C Compressor Request Range/Performance issue in a Land Rover?

- Repair times can vary depending on the specific cause of the problem and the availability of parts, but it may take a few hours to a full day to diagnose and repair the issue successfully.