P2506 OBD-II Trouble Code: ECM/PCM Power Input Signal Range/Performance

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

SCHEDULE P2506 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2506 code

P2506 is a diagnostic trouble code (DTC) for "ECM/PCM Power Input Signal Range/Performance". 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 P2506 DIAGNOSTIC Get a fair and transparent estimate upfront

P2506 code definition

ECM/PCM Power Input Signal Range/Performance

What the P2506 code means

P2506 is an OBD-II generic code for the Engine Control Module (ECM) detecting if the power input signal is not within range or when its performance is not as specified.

What causes the P2506 code?

  • The ECM/PCM monitors the power input of the car to be within a specified range and performance level. If the input voltage does not stay within specifications, the code is set and the Check Engine Light is illuminated.

  • The vehicle battery supplies power to the ECM/PCM and if the voltage was below or drops below the specified minimum, then it causes the ECM /PCM to set the code.

What are the symptoms of the P2506 code?

  • The battery is too low to crank the vehicle properly.
  • The battery may be overcharged and voltage is above the specified range.
  • The battery may keep getting drained overnight.

How does a mechanic diagnose the P2506 code?

  • Scan codes and document the codes in the ECM/PCM.
  • Check the battery voltage level and load test the battery.
  • Start the engine and check if the charging system is within specifications.
  • Check if the voltage to the ECM/PCM is correct and stays within specifications.
  • Check the battery and electrical system for a draw of power from the battery.

Common mistakes when diagnosing the P2506 code?

  • Replacing the ECM/PCM when the battery is being drained of power overnight.
  • Failing to clear the ECM/PCM codes after the codes are fixed.
  • Replacing parts when the connection is loose or corroded to the battery.

How serious is the P2506 code?

Code P2506 is a code that the electrical power to the ECM/PCM is either too low or too high. These conditions can lead to failed batteries or a overcharged charging system, which could ruin electrical components or batteries causing them to fail.

What repairs can fix the P2506 code?

Additional comments for consideration regarding the P2506 code

Code P2506 is not a very common code and are used mostly by diesel vehicles. The battery being low on voltage supply to the ECM/PCM is the common cause for the code.

Need help with a P2506 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.

trouble codes
Check Engine Light
P2506

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

SCHEDULE P2506 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

P2619 OBD-II Trouble Code: Crank Position Signal Output Circuit Open
P2619 means an issue with the crankshaft position sensor which may cause rough idling and acceleration, engine misfires and poor engine performance.
P2338 OBD-II Trouble Code: Cylinder #3 Above Knock Threshold
P2338 P2338 Code Definition A P2338 code is a generic powertrain code related to an ignition-related problem, such as an engine misfire. It appears when the engine control module (ECM) has received a voltage reading outside the allowed variances from...
P2269 OBD-II Trouble Code: Water in Fuel Condition
P2269 P2269 code definition Water in fuel condition What the P2269 code means This trouble code indicates that the powertrain control module has detected that there may be water in the fuel system. This indication is picked up by a...

Related questions

I found out I need a steering fluid pump,and it my acceleration is sluggish,and fan is not moving,and when I try to past 35mph,my

Hello. From what you describe it would appear that your vehicle is experiencing more than one problem. If the pump and AC blower motor are bad then they will need to be replaced to restore functionality to both systems. The...

Check Engine Light came on

It sounds like you have a pretty bad misfire. While a faulty O2 sensor could be the cause, it is not the most likely. A misfire happen can be caused by anything that prevents the air/fuel mixture from igniting properly...

cylinder misfire

There seems to be a variety of symptoms going on at the same time. Addressing the ticking issue, it could be your lifters, and it could also be your fuel injectors. This could be part of the problem when it...

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