P0383 OBD-II Trouble Code: Glow Plug Control Module Control Circuit Low

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0383 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0383 code

P0383 is a diagnostic trouble code (DTC) for "Glow Plug Control Module Control Circuit Low". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0383 DIAGNOSTIC Get a fair and transparent estimate upfront

P0282 code definition

The PCM stores the P0282 code when a low voltage reading of the glow plug heater circuit is detected. This will often be accompanied by other glow plug circuit codes.

What the P0282 code means

In order to begin combustion in cold temperatures, the engine requires the heat provided in part by the glow plug system. The temperature and voltage of the glow plugs is monitored by the ECM before and during engine combustion. If the voltage reading detected by the ECM is more than 10% lower than the reading recommended by the manufacturer, the PCM will store the P0282 code.

What causes the P0282 code?

Faulty glow plugs are most commonly to blame for the P0282 code. However, there could be quite a few other causes, including:

  • Faulty glow plug relay
  • Bad glow plug module or timer
  • Open or shorted glow plug wiring harness
  • Blown fuses (which indicate an underlying issue elsewhere)
  • Loose, corroded, or shorted glow plug circuit electrical connectors
  • Loose, shorted, or open wiring in the glow plug heater circuit

What are the symptoms of the P0282 code?

A slow start, and possibly even white smoke from the exhaust when the vehicle does start, may be observed with the P0282 code. The engine may seem far too loud, and the glow plug indicator lamp may stay on constantly. The code will be stored in the PCM, and the Check Engine lamp will illuminate.

How does a mechanic diagnose the P0282 code?

After an OBD-II scanner detects the P0282 code, a technician should inspect of all the wiring and electrical components related to the glow plug heater circuit. Any damaged elements should be repaired or replaced. They should then clear the code and perform a test drive, checking that the Check Engine light does not reappear. If the light does reappear, the mechanic should check individual glow plug connectors for the proper voltage and ground signals.

As the mechanic moves through each potential repair to find the issue, they should be sure to clear the code from the PCM and retest the system after each step. This will ensure that the proper repair is performed, and that the issue will not reappear later.

Common mistakes when diagnosing the P0282 code

Many technicians report that the glow plug timers and glow plug relays are often replaced when they don’t need to be. Mechanics should be sure to check wiring and commonly at-fault parts before replacing anything, especially because the glow plugs themselves, or the electrical components, are most often to blame.

How serious is the P0282 code?

This issue can cause major issues with the start up and operation of a vehicle, especially in cold climates. If the P0282 code is stored in the PCM, the vehicle should be repaired right away.

What repairs can fix the P0282 code?

There are many ways that a technician can address a P0282 code detection. They include:

  • Replacing a faulty glow plug
  • Replacing a faulty glow plug relay
  • Repairing loose, shorted, or open wiring in the glow plug heater circuit
  • Replacing blown fuses, and searching for and repairing the underlying issue that a blown fuse can indicate
  • Replacing a bad glow plug module or timer
  • Repairing an open or shorted glow plug harness
  • Repairing loose, corroded, or shorted glow plug circuit electrical connectors

Need help with a P0282 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6220.

P0383
trouble codes
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0383 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,810

Rating Summary
4,424
187
47
28
124
4,424
187
47
28
124

Joel

19 years of experience
741 reviews
Joel
19 years of experience
Acura RL - Check Engine Light is on - Jacksonville, Florida
very knowledgeable and precise. able to fix electrical issues in my car. Right on time for the appointment.

Christopher

15 years of experience
41 reviews
Christopher
15 years of experience
Honda Accord - Check Engine Light is on - Fairburn, Georgia
Christopher was excellent! He explained everything in detail to make sure I understood. He was professional and provided me with the next course of actions to resolve my care issues. I'm glad he was sent to service my car.

Alexander

18 years of experience
58 reviews
Alexander
18 years of experience
Saab 9-7x - Check Engine Light is on - Kissimmee, Florida
He was very friendly and very helpful . I felt like it was being around a close friend , also gave me so very good advice on my car & future advice about it . Highly recommend mechanic, would use his services again .

Matthew

31 years of experience
639 reviews
Matthew
31 years of experience
Jeep Patriot - Check Engine Light is on - Norfolk, Virginia
Matthew was on time which was a relief, he is very knowledgeable and was easy to understand what was wrong and what was being done. I am recommending to friends and family due to the great experience Matthew gave me. Extremely professional 10/10

More related articles

P2740 OBD-II Trouble Code: Transmission Fluid Temperature Sensor B Circuit
P2740 means system is receiving a high temperature reading due to low fluid level or a failing transmission or other electrical or sensor problem.
P0160 OBD-II Trouble Code: 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P0160 P0160 code definition Trouble code P0160 is set when no activity is detected on the bank 2 sensor 2 oxygen sensor circuit. Bank 2 refers to the side of the engine opposite of cylinder number one. Sensor 2 means...
P0442 OBD-II Trouble Code: Evaporative Emission Control System Leak Detected (Small Leak)
P0442 code definition P0442 is a diagnostic trouble code (DTC) that is seen when a evaporative emission control system malfunction is present....

Related questions

Just replaced coolant sensor in a 1996 Toyota Camry and still have check engine light.

Check the engine's computer and see what codes are stored in the system. If the code is coming up for the same issue, then there could be a broken wire on the coolant temperature sending unit. If you need further...

Error code P0139.

Hello, you are going to have to take your car to the dealer. There is a Technical Service Bulletin (TSB) 18 033 06. This TSB will refer you to having the software updated in the engine PCM and transmission control...

The master warning light as well as the low tire pressure light is on what does this mean?

The tire pressure light is an indication that there is a tire low on air or there is a failed sensor in one of the tires and should check to see if any tire is low on air first and...

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.

1-800-701-6230 · hi@yourmechanic.com