Range Rover Says Restricted Performance – Time To Panic?

The reason why your Range Rover error message says restricted performance indicates there is an issue within your Land Rover Range Rover’s power system, which could be the air intake system, the engine’s sensors, or issues with the transmission.

This fault is similar to the Range Rover reduced engine performance error message – the only difference is that the reduced engine performance is for an older Ranger Rover model. The restricted performance is for newer Range Rover models.

In this article, we’ll go over the signs, OBD codes, and symptoms of restricted performance, the most likely causes and how to fix them.

What models are affected?

Signs and symptoms of restricted performance

Some immediate and obvious signs of the restricted performance warning error in a Range Rover include reduced power, poor acceleration, and a decrease in fuel efficiency.

Other symptoms can include engine misfires, transmission slipping, and a check engine light.

What OBD codes show restricted performance on a Range Rover?

The OBD codes commonly associated with restricted performance include P0101, P0102, and P0103 but are not limited to the following OBD codes:

P0100: Mass Air Flow Circuit Malfunction
P0101: Mass Air Flow Circuit Range/Performance
P0102: Mass Air Flow Circuit Low Input
P0103: Mass Air Flow Circuit High Input
P0104: Mass Air Flow Circuit Intermittent
P0171: Fuel Trim System Lean (Bank 1)
P0172: Fuel Trim System Rich (Bank 1)
P0300: Random/Multiple Cylinder Misfire Detected
P0301: Cylinder 1 Misfire Detected
P0302: Cylinder 2 Misfire Detected
P0303: Cylinder 3 Misfire Detected
P0304: Cylinder 4 Misfire Detected
P0305: Cylinder 5 Misfire Detected
P0306: Cylinder 6 Misfire Detected
P1101: Throttle Actuator Control Motor Circuit Malfunction
P1111: Throttle Actuator Control Motor Circuit Range/Performance
P1112: Throttle Actuator Control Motor Circuit Low
P1113: Throttle Actuator Control Motor Circuit High
P1114: Throttle Actuator Control Motor Circuit Intermittent
P1300: Ignition Coil Circuit Malfunction
P1301: Ignition Coil Circuit Malfunction (Cylinder 1)
P1302: Ignition Coil Circuit Malfunction (Cylinder 2)
P1303: Ignition Coil Circuit Malfunction (Cylinder 3)
P1304: Ignition Coil Circuit Malfunction (Cylinder 4)
P1305: Ignition Coil Circuit Malfunction (Cylinder 5)
P1306: Ignition Coil Circuit Malfunction (Cylinder 6)
P1550: Throttle Actuator Control Motor Relay Circuit Malfunction
P1551: Throttle Actuator Control Motor Relay Circuit Range/Performance
P1552: Throttle Actuator Control Motor Relay Circuit Low
P1553: Throttle Actuator Control Motor Relay Circuit High
P1554: Throttle Actuator Control Motor Relay Circuit Intermittent

The Range Rover has tonnes of sensors, probably more than you could ever imagine. You are best plugging the OBD scanner in, and finding the code, and you can verify the error code on our Range Rover OBD code list.

Buying guide: Best Land Rover OBD2 scanner tools

Most likely causes of ‘restricted performance’ warning

The most common causes of restricted performance in a Range Rover include issues with the air intake system, problems with the engine’s sensors usually, the main sensor that could be the culprit is the mass air flow sensor and issues with the transmission.

In some cases, restricted performance can also be caused by a problem with the Range Rover’s ECM/computer.

Can it be fixed without a mechanic?

Some of the causes of restricted performance can be fixed without the help of a mechanic.

For example, if the issue is caused by a problem with the air intake system, it can often be fixed by cleaning or replacing the air filter.

However, if the issue is caused by a problem with the engine’s sensors or the transmission, it may require the expertise of a mechanic.

Parts you’ll need

If the issue is caused by a problem with the air intake system, you’ll need to purchase a new air filter.
You’ll need to purchase new sensors if the issue is caused by a problem with the engine’s sensors.
If a problem with the transmission causes the issue, you’ll need to purchase a new transmission or transmission parts.

Tools you’ll need

To fix a problem with the air intake system, you’ll need a socket set and a flathead screwdriver.
To fix a problem with the engine’s sensors, you’ll need a socket set and a wire connector.
To fix a problem with the transmission, you’ll need a transmission jack and a set of transmission tools.

How to fix it

First, locate the air filter and remove it using the socket set and flathead screwdriver to fix a problem with the air intake system.
Replace the air filter with a new one and reattach the air intake system.
To fix a problem with the engine’s sensors, locate the sensors and remove them using the socket set and wire connector.
Replace the sensors with new ones and reattach them to the engine.
To fix a problem with the transmission, remove the transmission using the transmission jack and transmission tools.
Replace the transmission or transmission parts and reattach them to the vehicle.

Potential other alternative causes

Other potential causes of restricted performance in a Range Rover can include issues with the exhaust system, problems with the fuel system, or issues with the vehicle’s computer.

In some cases, restricted performance can also be caused by a problem with the vehicle’s software.

Summary

To round this up, the restricted performance red triangle warning showing up on a Range Rover can be caused by a variety of issues, including problems with the air intake system, engine sensors, and transmission.

The warning message is typically accompanied by other symptoms such as reduced power and poor acceleration.

While some causes can be fixed without the help of a mechanic, others may require professional assistance.

It is important to identify the specific cause of the problem in order to determine the appropriate course of action and necessary parts and tools.

FAQs

Can I drive my Range Rover with restricted performance?

It is not recommended to drive your Range Rover with restricted performance as it can cause further damage to the vehicle and may be unsafe to operate. It is best to have the vehicle inspected by a professional mechanic to determine the cause of the problem and have it fixed.

How to reset the restricted performance on a Range Rover?

To reset the restricted performance on a Range Rover, the first step is to identify and fix the underlying issue causing the problem. Once the issue is resolved, the vehicle’s computer should automatically reset the restricted performance message. If the message persists, a professional mechanic may need to reset it using specialized diagnostic tools.