P0615 OBD-II Trouble Code: Starter Relay Circuit

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

SCHEDULE P0615 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0615 code

P0615 is a diagnostic trouble code (DTC) for "Starter Relay Circuit". 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 P0615 DIAGNOSTIC Get a fair and transparent estimate upfront

P0615 code definition

The PCM (powertrain control module) will store a P0615 code when it detects a voltage reading from the starter relay circuit that is out of range of the acceptable manufacturer settings.

What the P0615 code means

This code indicates that the starter relay (also called the PNP relay or park/neutral relay) is in the “On” position when the vehicle is not in park or neutral. When the vehicle is in gear, the starter relay should be in the “Off” position, which prevents the vehicle from starting when it’s in gear. If it’s in the “On” position when the vehicle is not in park or neutral, the code will set, and the Check Engine light will turn on.

What causes the P0615 code?

When the P0615 code is stored, the most common causes are:

  • A defective ignition switch
  • A bad starter relay
  • A shorted or open starter relay circuit
  • A blown fuse
  • Defective or damaged battery cable(s)
  • A faulty starter motor or solenoid
  • A defective PCM (rare)

What are the symptoms of the P0615 code?

In most cases, there will be no noticeable symptoms affecting the vehicle’s drivability or performance. Sometimes, this code may allow the vehicle to start when it’s not in park or neutral, or a no-start or no-crank condition may occur, which won’t allow the vehicle to start at all.

How does a mechanic diagnose the P0615 code?

Diagnosis starts by using an OBD-II scanner to identify the P0615 code. After the code is identified, the mechanic will visually inspect the battery cables, the starter relay circuit, and all components, wiring, and connectors associated with it. They will then address any issues with these in a methodical order, and with each step they will clear the code and retest the system to see if the problem has been resolved or not. After going through all diagnostic measures, once they believe that they have solved the problem, they will test the system one last time to see if there is an intermittent issue that may be causing the code to be stored only under certain conditions.

Common mistakes when diagnosing the P0615 code

When faced with this problem, many people automatically assume that there’s a problem with the starter motor and that it needs to be replaced. This is an expensive mistake that will not actually solve the problem. In newer vehicles, this issue is much more often caused by the starter motor’s voltage supply, not the starter motor itself.

How serious is the P0615 code?

Depending on the symptoms that accompany it, the P0615 code may be a fairly benign one, or it may be more serious. In some cases, you won’t notice any difference in the drivability of your vehicle, but a no-start condition could be tripped at any time if the code has not been resolved. Furthermore, other issues may arise from this code, so it’s very important to resolve it as soon as possible.

What repairs can fix the P0615 code?

Depending on what’s causing the PCM to detect and store the P0615 code, a number of repairs can be done to resolve it, including:

  • Replacing a blown fuse
  • Replacing bad battery cables
  • Replacing or repairing a bad starter relay
  • Replacing the ignition switch
  • Repairing or replacing faulty wiring or connectors
  • Replacing the starter motor or solenoid (rare)
  • Replacing or reprogramming the PCM (rare)

Additional comments for consideration regarding the P0615 code

Even if the vehicle seems to drive perfectly, it’s important to address the P0615 code before it renders your vehicle inoperable, or causes other problems. Likewise, if you need to get an OBD-II emissions test to renew your vehicle’s registration, you’ll have to address this issue so that the Check Engine light turns off before your vehicle can pass.

Need help with a P0615 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
P0615
Check Engine Light

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

SCHEDULE P0615 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

Related questions

Where is the circuit one camshaft position sensor located?

Hello. The camshaft position sensor is located on the passenger side of the engine bay, on the cylinder head near the coolant reservoir tank. The reservoir tank needs to be removed in order to access it. If you need help...

Black smoke and rich fuel the codes P0191 & P0452 and short trim bank 1 & 2. Both at -28.9

Hello. You have 2 separate problems here. The P0191 (fuel rail pressure sensor circuit problem) may just be a symptom - it is reporting suspect fuel pressure on the rail. The fuel pressure on the rail is controlled by the...

check engine light on with code P0139 and P0841. Added Techron last fill up and now light went off, on and off again. What is go

The trouble codes that you have downloaded have not arisen due to the use, or non-use, of the fuel additive. Code P0841 simply refers to an abnormality in the transmission fluid pressure sensor circuit. Possible causes of that code include...

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