Jaguar XJS Reduced Power light is on Inspection at your home or office.

Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

Estimate price near me

Service Location

Customer Ratings

(20)

How A Diagnostic Works

Instantly book a certified mobile mechanic to come to you

Mechanic diagnoses the problem and quotes necessary repairs

Your vehicle is ready to go

Fair, upfront & transparent pricing for all services

Our certified mobile mechanics can come to you now.

Customer Ratings

(20)

Reduced Power light is on Inspection Service

How much does a Reduced Power light is on Inspection cost?

On average, the cost for a Jaguar XJS Reduced Power light is on Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1992 Jaguar XJSL6-4.0LService typeReduced Power light is on InspectionEstimate$114.99Shop/Dealer Price$139.99 - $158.75
1976 Jaguar XJSV12-5.3LService typeReduced Power light is on InspectionEstimate$94.99Shop/Dealer Price$120.04 - $138.82
1995 Jaguar XJSV12-6.0LService typeReduced Power light is on InspectionEstimate$94.99Shop/Dealer Price$120.03 - $138.82
1991 Jaguar XJSV12-5.3LService typeReduced Power light is on InspectionEstimate$94.99Shop/Dealer Price$119.98 - $138.72
1994 Jaguar XJSV12-6.0LService typeReduced Power light is on InspectionEstimate$94.99Shop/Dealer Price$120.07 - $138.89
1994 Jaguar XJSL6-4.0LService typeReduced Power light is on InspectionEstimate$94.99Shop/Dealer Price$120.03 - $138.82
1986 Jaguar XJSV12-5.3LService typeReduced Power light is on InspectionEstimate$99.99Shop/Dealer Price$124.69 - $143.22
1985 Jaguar XJSV12-5.3LService typeReduced Power light is on InspectionEstimate$99.99Shop/Dealer Price$125.63 - $144.85
Show example Jaguar XJS Reduced Power light is on Inspection prices

A Reduced Power light usually indicates a fairly serious problem with the throttle system. When this light illuminates the vehicle will often go into a “safe mode”, which will severely limit the speed of the car and in some cases will render the vehicle un-drivable.

Since the Reduced Power light can trigger for a number of different reasons, tracking down the exact cause is extremely important, if the vehicle is not properly diagnosed and repaired, the Reduced Power light will trigger again, putting the vehicle in safe mode.

How this system works:

When the vehicle’s computer detects a fault in the engine that affects its drivability, performance, transmission or emission system it will trigger the reduced power light. It will also trigger if there is an issue with the electronic throttle, the accelerator pedal or the throttle module.

When a vehicle goes into reduced power mode it will seriously impact its performance. Some vehicle will be restricted to idle speed while others restrict speed to 20-30 miles per hour. The Reduced Power trigger will save Diagnostic Trouble Codes (DTCs), which will indicate where the fault occurred. In most cases, a Restricted Power light is related to a throttle body or the connector.

Common reasons for this to happen:

  • Faulty Throttle Body: A throttle body is part of the of the air intake system which helps control the amount of air going into the engine. If a throttle body is failing the engine will not get the correct mixture of air and fuel. This can trigger the Reduced Power light as well as lead to a poor running engine. It can also trigger the Check Engine light.

  • Failing Throttle Position Sensor: The throttle position sensor tells the vehicle computer the position of the gas pedal. The computer uses this information to calculate the proper amount of air and fuel to send to the engine. The throttle position sensor also controls shifting the gears of a vehicle, which means that a faulty throttle position sensor will prevent a car from changing gears. If this part is failing, the Reduced Power light will trigger.

  • Faulty Engine Control Unit: The engine control unit is an essential component of a vehicles computer. It regulates and controls many systems, including the drive train and parts of the engine. If a fault is detected in this crucial part, it can trigger the Reduced Power light as well as the Check Engine light. This is a major issue that should be investigated as soon as possible.

  • Faulty Wiring: Exposed or damaged wires can cause issues with the any of these components and will possibly trigger the Reduced Power light. A loose wiring crimp can also be the culprit. Wiring issues can be tricky to track down so using a professional mechanic is a necessity.

  • Malfunctioning Oxygen Sensors: Oxygen sensors are responsible for measuring how rich or lean exhaust gases are leaving a vehicles combustion chamber. The vehicle’s computer uses this information to constantly adjust the amount of fuel going into the engine. A failing or dirty sensor can put too much or too little fuel into the engine. While a failing oxygen sensor will usually trigger a Check Engine light it is possible that the Reduced Power light could also trigger.

What to expect:

A top-rated mobile mechanic will come to your home or office to determine the source and cause of the Reduced Power light issue, ​and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How it's done:

The mechanic will inspect your vehicle's air intake system, electrical wiring and sensors, including the throttle body and oxygen sensors, along with other important components. It may be necessary for the mechanic to test drive the car to verify the complaint and provide an accurate diagnosis.

How important is this service?

The Reduced Power light only illuminates if there is a serious issue with the vehicle that must be addressed immediately. In almost all cases, the throttle or the vehicles computer will be malfunctioning which can make driving the vehicle dangerous. While it varies by manufacturer, most vehicles that go into “safe mode” will stay there until the error codes are read by a code scanner.

If the vehicle Reduced Power light illuminates the vehicle should immediately be inspected, diagnosed and repaired.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Jaguar mechanics

Real customer reviews from Jaguar owners like you.

Excellent Rating

(20)

Rating Summary
20
0
0
0
0
20
0
0
0
0

Jake

10 years of experience
3 reviews
Jake
10 years of experience
Jaguar XJS L6-4.0L - Car Battery Replacement - Jacksonville, Florida
Jake was professional and courteous. A pleasant client experience.

Jerome

24 years of experience
415 reviews
Jerome
24 years of experience
Jaguar XJS L6-4.0L - Alternator - Catonsville, Maryland
Jerome is an excellent technician. He was helpful to me and willing to give incite on other things related to this antique vihicle. Easy to talk to and I'm sure I will be using him again.

David

21 years of experience
107 reviews
David
21 years of experience
Jaguar XJS L6-4.0L - Battery - Denver, Colorado

David

16 years of experience
636 reviews
David
16 years of experience
Jaguar XJS V12-5.3L - Coolant is leaking - Fairfield, California
Very friendly, professional and knowledgeable.

Excellent Rating

(20)

Rating Summary
20
0
0
0
0
20
0
0
0
0
Number of Jaguar XJS services completed
220+
services done by our mechanics
TOTAL NUMBER OF EXPERT Jaguar MECHANICS
400+
experts on our platform

Recent articles & questions

Symptoms of a Bad or Failing AC Condenser Fan
Common signs include lukewarm air coming from the AC vent, the car overheating while idle, and a burning smell in the car.
Georgia Parking Laws: Understanding the Basics
Drivers Drivers in the state of Georgia need to be aware of the various parking laws and regulations to ensure they do not inadvertently park in the wrong location. If you park where you aren’t supposed to, you can expect...
P2003 OBD-II Trouble Code: Diesel Particulate Filter Efficiency Below Threshold Bank 2
P2003 P2003 trouble code definition P2003 is a generic diagnostic trouble code (DTC) that indicates a fault with the Diesel particulate filter. This code is identical to the P2002 code except that P2002 is for bank 1. What the P2003...

What Causes Shock Absorbers Or Struts To Leak Or Otherwise Fail?

Shock absorber (https://www.yourmechanic.com/article/3-essential-things-to-know-about-your-car-s-shock-absorbers)/strut life depends on how and where the vehicle is driven. Original equipment shock absorbers/struts (https://www.yourmechanic.com/article/what-is-a-strut) are carefully matched to the vehicle springs and bushings to provide the best ride comfort and control. As the ball joints, control...

I use a lot of antifreeze like 2 gallons a week

This suggests that your engine is either leaking the anti-freeze out of the cooling system or you may have a blown cylinder head gasket. In the case of a leak, this will be noticeable by the coolant being leaked out...

Cold starting

Hello, When you start your vehicle in the morning and turn the key to on, the coolant temperature sensor reads the temperature of the coolant and relays this to the computer indicating that the coolant is cold. The computer then...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com