Peugeot 2008 Fan Not Working: Complete Troubleshooting Guide & Fixes

When the Peugeot 2008 fan stops working, everything feels like it’s running on thin ice. Suddenly the cabin won’t cool, the engine temperature creeps upward, and we begin wondering whether this is a simple electrical glitch or the start of an expensive repair. We’ve all been there—one moment your 2008 is cruising smoothly, and the next the cooling fan refuses to respond. So today, we’re breaking down everything you need to know in a clear, practical, human way.

This guide goes far beyond basic troubleshooting. We dive deep, we simplify the jargon, we ask the questions you would ask, and we give you the step-by-step actions you can take—not tomorrow but right now. And we do it together, because fixing a stubborn fan on a Peugeot 2008 doesn’t have to feel like rocket science.

Understanding How the Peugeot 2008 Cooling Fan System Works

Before solving the “fan not working” issue, we need to understand what the fan actually does. Think of it as a wind machine whose job is to keep the engine cool and the air-conditioning system alive. Without it, temperatures skyrocket.

Why the Cooling Fan Matters

• It prevents overheating.
• It boosts AC performance by pulling air through the condenser.
• It maintains consistent temperature under heavy loads.
• It protects the head gasket from catastrophic heat damage.

Key Components in the Peugeot 2008 Cooling Fan Circuit

Your fan’s reliability depends on several elements:

• Cooling fan motor
• Fan resistor or fan module
• Fan relay
• Fuse for the cooling system
• Coolant temperature sensor
• Engine Control Unit (ECU)
• Wiring harness and connectors

When even one of these fails, the entire system can collapse.

Common Symptoms of a Peugeot 2008 Fan Not Working

Let’s look at the most common clues your fan has gone on strike.

Overheating at Idle

If the engine only overheats when stopped in traffic, that’s a classic symptom of a non-functional fan.

Weak or Warm AC Airflow

The AC relies on the fan. No fan = no cool breeze.

Cooling Fan Never Turns On

Even when temperatures rise above 100°C, the fan doesn’t activate.

Fan Runs Intermittently

Sometimes it works, sometimes it doesn’t—usually caused by a failing relay, wiring, or resistor.

Warning Lights on the Dashboard

One or more of these may appear:

• Engine temperature warning
• Service/Check light
• AC error message

Main Causes of a Peugeot 2008 Fan Not Working

Let’s break down the most frequent culprits and explain them without the fluff.

Blown Cooling Fan Fuse

A fuse protects the circuit. If it blows, the fan dies instantly.

Faulty Fan Relay

Relays act as switches. When they fail, they don’t send power to the fan.

Broken Fan Motor

If the motor’s brushes wear out, the fan won’t spin.

Bad Fan Resistor / Control Module

Common on newer Peugeot models, this part fails more often than you’d think.

Damaged Wiring Harness

Corrosion, rodent damage, or loose plugs? It happens more often than you’d imagine.

Coolant Temperature Sensor Failure

If the sensor doesn’t report the temperature correctly, the ECU never triggers the fan.

Peugeot 2008 Mirrors Not Unfolding: Complete Troubleshooting Guide & Fixes

Low Coolant Level

Strangely enough, low coolant can prevent the fan from activating.

ECU Software Glitch

Rare—but possible. Peugeot ECUs can occasionally misread temperature data.

How to Diagnose a Peugeot 2008 Fan Not Working (Step-by-Step)

Here’s the practical part. No complicated tools. No guesswork. Just simple checks.

Step 1: Listen for Fan Activation

Turn on the AC and wait. Normally, the fan should activate within 10–20 seconds.

Step 2: Check the Cooling Fan Fuse Box

Find the under-bonnet fuse box. Inspect the cooling fan fuse.

If blown: Replace with one of the correct amperage.
If it blows again: There’s a short circuit—move to wiring diagnostics.

Step 3: Test the Fan Motor Directly

This is the fastest way to know if the motor is alive.

• Unplug the fan connector
• Apply 12V directly from the battery
• If it spins: motor is fine
• If not: replace the motor

Step 4: Inspect the Fan Relay

Swap it with another identical relay in the fuse box.
If the fan works with the swapped relay: old relay = dead.

Step 5: Check Fan Resistor / Fan Control Module

Located near the fan shroud.

Typical signs of failure:

• Fan only works on high speed
• Fan doesn’t activate at all
• AC performance inconsistent

Step 6: Test Coolant Temperature Sensor

Use a simple OBD scanner to check real-time temperature values.

If temperatures stay frozen at a low or impossible number, the sensor is faulty.

Step 7: Inspect Wiring and Connectors

Look for:

• Green oxidation
• Burnt connectors
• Cut wires
• Loose plugs

Step 8: Check the AC Pressure Sensor

If the AC pressure is too low, the fan won’t activate with the AC.

Step 9: Scan ECU for Fault Codes

Common codes for fan issues include:

• P0480 – Cooling Fan Control Circuit
• P0481 – Fan Relay 2 Malfunction
• P0115 – Coolant Temp Sensor Fault

Peugeot 2008 Fan Not Working Due to AC Issues

Sometimes the engine cooling fan works fine, but the AC triggers stop.

What AC-Related Faults Affect the Fan?

• Low refrigerant
• High-pressure sensor malfunction
• Faulty compressor clutch
• AC control panel malfunction

Can the AC Fan and Engine Fan Fail Separately?

Yes—many Peugeot 2008 models have independent circuits for both.

Repair Options and Estimated Repair Costs

Let’s talk money—because no one likes surprises at the garage.

Peugeot 2008 Mirrors Not Unfolding: Complete Troubleshooting Guide & Fixes

Why Your Peugeot 2008 Won’t Start: Complete Troubleshooting Guide to Diagnose and Fix Non-Starting Issues

Typical Repair Costs (Peugeot 2008)

When the Cooling Fan Stops Working While Driving

If the fan fails at highway speed, the airflow is still enough to keep temperatures controlled. The real danger is when idling.

What to Do If the Car Overheats

• Immediately turn off the AC
• Turn on heater to max (it acts as a secondary radiator)
• Pull over safely
• Let the engine cool for 15–20 minutes
• Never open the coolant tank while hot

How to Prevent Future Fan Failures on a Peugeot 2008

A little prevention saves you hours of headaches.

Follow These Prevention Tips

• Clean the radiator once per year
• Inspect wiring every service
• Replace coolant every 2 years
• Avoid running AC with low refrigerant levels
• Keep the fuse box dry

Is It Safe to Drive a Peugeot 2008 with a Broken Fan?

Short answer: No.

Long answer: You may get away with it briefly, but the risk of overheating and blowing the head gasket is extremely high. Repairs for that easily run into $1200+.

Situations Where You Should Stop Driving Immediately

• Coolant temperature passes 110°C
• AC blows warm suddenly
• You see steam
• Dashboard displays overheating warnings

DIY Fixes You Can Try at Home

These quick fixes can get you back on the road without calling a mechanic.

Reset the System

Disconnect the battery for 10 minutes to reset the ECU.

Clean the Fan Connector

A dirty connector can block electrical flow.

Bypass the Fan Relay Temporarily

Only for emergency use.

When You Need a Professional Mechanic

Bring your Peugeot 2008 to a certified technician if:

• The ECU throws multiple unknown codes
• Wiring repairs exceed your comfort level
• The fan motor is burnt
• The fan works sometimes but not always

Intermittent electrical issues can be tricky even for experienced DIYers.

How Long Does a Peugeot 2008 Cooling Fan Last?

Most fan motors last between 80,000 and 140,000 miles.

However, heat, winters, humidity, and dust can shorten lifespan.

Should You Replace or Repair?

We recommend replacement when:

• Fan motor brushes are worn
• Control module is burnt
• Wiring is heavily corroded

Repair is possible when:

• Fuse is blown
• Relay is faulty
• Connector is loose

Summary: Solving the Peugeot 2008 Fan Not Working Issue

The cooling fan is essential for the engine and AC system. When it fails, your Peugeot 2008 becomes vulnerable to overheating, AC loss, and costly engine damage. With the steps in this guide, you can confidently diagnose, repair, and even prevent fan failures. Whether you’re a curious driver or a hands-on DIY enthusiast, this guide equips you with the clarity and confidence you need to keep your 2008 running cool and reliable.

FAQs

Why is my Peugeot 2008 overheating at idle?

Because the cooling fan most likely isn’t running. Check fuse, relay, and fan motor first.

Does the AC fan and engine fan share the same circuit?

Not always. Many Peugeot 2008 models have independent circuits.

How do I know if the fan relay is faulty?

Swap the relay with another identical one. If the fan works, the relay is bad.

Peugeot 2008 Mirrors Not Unfolding: Complete Troubleshooting Guide & Fixes

Why Your Peugeot 2008 Won’t Start: Complete Troubleshooting Guide to Diagnose and Fix Non-Starting Issues

How to Fix Fiat 500 Clutch Problems: Symptoms and Solutions

Can low coolant stop the fan from working?

Yes, low coolant can prevent proper temperature readings.

How much does it cost to fix a Peugeot 2008 cooling fan?

Repairs range from $15 (relay) to $350+ (fan motor replacement).

If you want to know other articles similar to Peugeot 2008 Fan Not Working: Complete Troubleshooting Guide & Fixes you can visit the category Common Problems.