Vauxhall Mokka Code 89: What It Means and How to Fix It
If you own a Vauxhall Mokka, you may have encountered an error code that reads “Code 89.” This can be frustrating, especially if you’re not sure what it means or how to resolve it.
Vauxhall Mokka Code 89, In this article, we’ll dive into what Code 89 is, what causes it, and the best steps to fix the issue.

What is Vauxhall Mokka Code 89?
Code 89 is a diagnostic trouble code (DTC) that typically appears when there’s a problem with the vehicle’s Emissions Control System.
Specifically, this code is often related to a fault in the exhaust gas recirculation (EGR) valve or a malfunction in other related components.
Common Symptoms of Code 89
- Reduced engine performance: The vehicle may not accelerate as smoothly as usual.
- Rough idling: The engine may feel unstable, especially when idling.
- Increased fuel consumption: A malfunctioning EGR valve can lead to poor fuel efficiency.
- Engine warning light: The check engine light (CEL) may turn on to indicate the issue.
Causes of Vauxhall Mokka Code 89
There are several potential causes for Code 89 in your Vauxhall Mokka. The most common issues are related to the EGR valve and the exhaust system. Here’s a breakdown of the key causes:
1. Faulty EGR Valve
The EGR valve is responsible for redirecting some exhaust gases back into the engine to reduce emissions. If the valve becomes clogged or malfunctions, it can lead to poor engine performance and trigger Code 89.
2. Vacuum Leaks
A vacuum leak in the hoses or components connected to the EGR system can cause an imbalance in airflow, which might trigger the fault code.
3. Dirty or Blocked EGR System
Over time, carbon buildup in the EGR valve or exhaust system can prevent the proper flow of exhaust gases. This can result in the activation of Code 89.
4. Faulty Sensors
Sensors related to the EGR valve and emissions system may give incorrect readings if they malfunction, leading to the appearance of the code.
How to Fix Vauxhall Mokka Code 89
Now that we know what causes the error code, let’s take a look at how you can fix the issue:

1. Inspect and Clean the EGR Valve
Cleaning the EGR valve is one of the most common fixes for Code 89. Over time, carbon buildup can clog the valve, causing it to malfunction. Remove the EGR valve, clean it using a suitable cleaning solution, and reinstall it.
2. Replace the EGR Valve
If cleaning doesn’t resolve the issue, the EGR valve may be faulty and need replacement. A new valve can restore proper function to the exhaust system.
3. Check for Vacuum Leaks
Inspect the vacuum hoses and connections for leaks. Replacing any damaged or cracked hoses can eliminate potential problems causing Code 89.
4. Inspect and Clean Sensors
Faulty sensors can cause inaccurate readings and trigger the fault code. Check the sensors related to the EGR system, and replace or clean them if necessary.
5. Clear the Error Code
After fixing the issue, clear the error code using an OBD-II scanner. This will reset the system, and the check engine light should turn off if the problem is resolved.
When to Seek Professional Help
While many owners can resolve Code 89 issues themselves, some situations may require professional assistance. If you’re unable to identify or fix the problem, it may be time to take your Vauxhall Mokka to a certified mechanic. They can perform more in-depth diagnostics and repairs.
People also ask
What does code 89 mean in a car?
Code 89 in a car typically refers to an issue with the Exhaust Gas Recirculation (EGR) system.
It often indicates a malfunction or blockage in the EGR valve or related components, which can lead to reduced engine performance,
rough idling, or increased fuel consumption. It’s usually necessary to clean or replace the EGR valve to resolve the issue.
What is the code 89 on coolant?
Code 89 related to coolant usually indicates a coolant temperature sensor issue or a coolant flow problem.
It may point to a malfunction in the sensor that monitors engine temperature or a problem with the coolant system, potentially leading to engine overheating or poor performance.
Checking the sensor and coolant levels is recommended to fix the issue.
What does code 82 mean on a Vauxhall Mokka?
Code 82 on a Vauxhall Mokka typically refers to a low engine oil level or oil pressure issue. This warning indicates that the engine oil level may be too low or there may be a problem with the oil pressure sensor.
It’s important to check and top up the oil or have the system inspected to prevent engine damage.
What are the faults in a Vauxhall Mokka?
Common faults in a Vauxhall Mokka include:
EGR Valve Issues: Clogged or faulty EGR valve causing engine performance problems.
Turbocharger Failures: Turbo issues leading to loss of power or unusual noises.
Electrical Problems: Faulty wiring or sensors triggering warning lights.
Suspension Wear: Premature wear of suspension components, causing a rough ride.
Transmission Problems: Hesitation or rough shifting in automatic transmissions.
Cooling System Issues: Leaks or overheating due to faulty hoses or thermostats.