Commercial Vehicle Diagnotics
Commercial Vehicle Diagnotics
Accurate Commercial Vehicle Diagnostics That Save Time, Money and Downtime
Commercial Vehicle Diagnostics
Modern commercial vehicles are more technologically advanced than ever before. From engine management systems and emission controls to braking systems, safety features and onboard electronics, today's HGVs and commercial vehicles rely on complex computer-controlled systems to operate safely and efficiently.
When something goes wrong, identifying the cause quickly is essential.
At PLB, we combine industry-leading diagnostic technology with experienced commercial vehicle technicians to accurately identify faults, allowing repairs to be completed efficiently and helping to minimise unnecessary downtime for your business.
Whether you're experiencing a warning light, loss of power, an intermittent fault or an electrical issue, we'll identify the problem and recommend the most effective solution.
Advanced Diagnostic Technology
Modern fault finding requires more than simply plugging in a diagnostic computer.
That's why we've invested in professional diagnostic equipment used throughout the commercial vehicle industry.
Our workshops are equipped with:
• Jaltest Multi-Brand Diagnostics
• IVECO Manufacturer Diagnostic Systems
• Specialist electrical testing equipment
• Battery and charging system testing equipment
• Brake testing equipment
• Headlight beam setter
• Suspension shaker plates
• Loaded trailer brake tester
This technology enables us to communicate directly with your vehicle's electronic control units (ECUs), allowing us to access manufacturer fault codes, live operating data and system information across multiple vehicle manufacturers.
Diagnosing More Than Warning Lights
A warning light only tells you that something is wrong.
Our job is to discover why.
Using advanced diagnostic software alongside the knowledge and experience of our technicians, we investigate the root cause of faults rather than simply replacing components in the hope that the problem disappears.
Our diagnostic capability covers:
• Engine management systems
• Emissions systems
• AdBlue and SCR systems
• Electrical faults
• ABS and EBS braking systems
• Suspension systems
• Gearbox and transmission faults
• Air management systems
• Vehicle lighting
• Battery and charging systems
• CAN Bus communication faults
• Safety systems
• Electronic control modules
By identifying the underlying cause of a fault, we can recommend the correct repair first time.
The Diagnostic Process
Every vehicle is different, but our diagnostic process follows a structured approach to ensure faults are identified accurately and efficiently.
Initial Assessment
We begin by discussing the symptoms you've experienced, including any warning lights, changes in performance or intermittent issues.
Understanding how and when the fault occurs often provides valuable information before diagnostic testing even begins.
Electronic System Analysis
Our diagnostic equipment communicates directly with the vehicle's onboard control systems to retrieve fault codes and live operational data.
Rather than simply reading fault codes, we analyse the information alongside the vehicle's operating conditions and maintenance history to build a complete picture of the problem.
Physical Inspection
Not every fault is electronic.
Many warning lights are triggered by mechanical failures, damaged wiring, worn components or air leaks.
Our technicians combine electronic diagnostics with a thorough physical inspection to confirm the root cause before recommending repairs.
This prevents unnecessary parts replacement and helps ensure the correct repair is carried out first time.
Repair Recommendations
Once we've identified the fault, we'll explain exactly what we've found using clear, straightforward language.
We'll discuss:
• The cause of the fault
• The repairs required
• Any alternative repair options where appropriate
• The likely timescale
• Estimated costs
We believe in complete transparency, giving you the information you need to make an informed decision before any work begins.
Professional Repairs
Unlike businesses that simply diagnose faults, our experienced technicians carry out the repairs in-house wherever possible.
From electrical repairs and wiring faults through to engine repairs, braking systems, emissions components and specialist diagnostics, we have the expertise and workshop facilities to complete the work efficiently.
Once repairs are complete, we'll retest the vehicle, clear any fault codes and confirm the system is operating correctly before returning the vehicle to you.
Why Accurate Diagnostics Matter
Incorrect diagnosis is one of the most common causes of unnecessary repair costs.
Replacing parts without identifying the root cause can lead to:
• Increased repair bills
• Repeat workshop visits
• Longer vehicle downtime
• Ongoing warning lights
• Reduced vehicle reliability
Our approach focuses on identifying the actual cause of the problem before repairs begin, helping save both time and money while getting your vehicle back on the road sooner.
Supporting Your Fleet
For fleet operators, fast and accurate diagnostics are essential to maintaining vehicle availability.
Our diagnostic services form an important part of our wider fleet maintenance programme, allowing us to identify developing issues before they become major failures and helping businesses reduce unexpected breakdowns and costly downtime.
By combining diagnostics with planned servicing, Preventative Maintenance Inspections (PMIs) and proactive maintenance, we help fleet operators keep their vehicles operating safely, efficiently and reliably throughout the year.
Common Diagnostic Problems We Resolve
• Engine management warning lights
• AdBlue and SCR system faults
• DPF regeneration issues
• ABS and EBS faults
• Electrical faults and battery drain
• Charging system failures
• Air leaks and pneumatic system faults
• CAN Bus communication faults
• Trailer electrical faults
• Loss of power and poor engine performance
• Starting problems
• Intermittent electrical faults
Book Your Vehicle Diagnostics
Whether your vehicle has a warning light, an intermittent fault, loss of power or an issue that's difficult to identify, our experienced technicians and advanced diagnostic equipment can quickly determine the cause and recommend the most effective repair.
Book your commercial vehicle diagnostic inspection today and let our experts get to the root of the problem.
Contact Details
Unit 2 Winfield Park, Mitchell, Newquay, United Kingdom