2012 Land Rover Discovery 4 (L319) — Repair Solution

3.0L 306DT 6cyl 24v DOHC Twin Turbo CRD Diesel · System Not Efficient · HVAC Control System

Land Rover Discovery 4 (L319) System Not Efficient HVAC Control System Diagnostic Sequence Available

Vehicle Details

Make: Land Rover
Model: Discovery 4 (L319)
Year: 2012
Engine: 3.0L 306DT 6cyl 24v DOHC Twin Turbo CRD Diesel
Area: HVAC Control System
Category: System Not Efficient

Customer Complaint

A/C inefficient. Not cooling on warmer days.

Problem Summary

A/C system inspected, used identifier and made sure the correct type of gas in the system, it was.

The low side pressures were a bit off when first started up, then went to set point and then fluctuating from 30psi to around 40psi. High side not doing much and sitting around 120psi.

Diagnostic Sequence

The step-by-step diagnostic process used to identify this fault is available to TaT members.

Unlock with Free Trial

Fault Description

The detailed fault description and root cause analysis for this 2012 Land Rover Discovery 4 (L319) is available to TaT members.

Unlock with Free Trial

Verified Repair Solution

The confirmed repair procedure for this 2012 Land Rover Discovery 4 (L319) is available to TaT members. Includes the verified fix and technician tips.

Unlock with Free Trial

Quick Facts

CodeLANL312620
Vehicle2012 Land Rover Discovery 4 (L319)
Engine3.0L 306DT 6cyl 24v DOHC Twin Turbo CRD Diesel
ComplaintVisible
Diag. SequenceMembers Only
SolutionMembers Only

Need the Full Fix?

Get the complete diagnostic sequence, verified solution, and technician tips.

Access the Full Repair Solutions Database

Unlock 6,127 verified repair solutions with complete diagnostic details, confirmed fixes, and technician tips.


© 2026 The Automotive Technician (TaT) — www.tat.net.au