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Technician diagnosing a motorcycle on the lift at Motorcycle Tire Center in Orange, CA

Diagnostics

Find the Fault.
Fix It Right.

Warning light on? Running rough? We use factory-level diagnostic tools to read the codes, trace the cause, and tell you exactly what's wrong before we touch a wrench.

Fault-Code ReadingAll Makes & ModelsRoot-Cause First
Factory
Diagnostic Tools
All
Makes & Models
Upfront
Written Estimate
No
Guesswork

How It Works

From Symptom to Answer

A good diagnosis saves you money. We isolate the real problem before recommending a single repair.

1

Describe the Symptom

Tell us what the bike is doing: a light, a noise, a misfire, a no-start. Every detail helps.

2

Scan & Test

We pull fault codes and run live tests on the electrical, fuel, and ignition systems.

3

Trace the Root Cause

Codes point to a system, not always the part. We test until we find the actual failure.

4

Clear Estimate

You get a plain-English explanation and a written estimate before any repair begins.

What We Diagnose

Problems We Track Down

If it lights up, won't start, or runs wrong, we can find out why.

Fault-Code Scanning

We read and interpret stored and live trouble codes across the ECU, ABS, and body systems.

No-Start Diagnosis

Cranks but won't fire, or dead silent, traced to battery, ignition, fuel, or security.

Electrical Gremlins

Intermittent lights, blown fuses, and phantom drains traced back to the real short.

Running & Misfire Issues

Rough idle, hesitation, and misfires diagnosed at the fuel, spark, and sensor level.

Charging System Tests

Battery, stator, and regulator/rectifier testing to end the dead-battery cycle for good.

Sensor & ABS Faults

TPS, O2, wheel-speed, and ABS module faults identified with factory-level tools.

Common Questions

Diagnostics FAQ

Sometimes, but not always. A light can mean anything from a loose sensor to a failing component. Bring it in and we'll read the code and tell you whether it's safe to ride.
Yes. We read Harley DTCs across the engine, ABS, body, and security systems, and we can interpret what each code actually means for your bike.
We quote the diagnostic time up front. If you approve the repair with us, we roll that diagnostic time into the job on most services.
Electrical and intermittent faults are exactly what we specialize in. We trace to the root cause instead of throwing parts at the problem.
We do: Harley, metric, sport, adventure, and vintage. If it has an electrical or running fault, we can diagnose it.

Something Not Right?

Don't throw parts at a problem. Let us find the real cause first.