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P0615 2004 Infiniti G35 Code - Start Signal Circuit

Quick Answer

The P0615 code in a 2004 Infiniti G35 indicates a problem with the start signal circuit. Common causes include Faulty ignition switch, Wiring issues in the start signal circuit, Defective starter relay. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0615 2004 Infiniti G35 indicates Start Signal Circuit.
Common causes
Common causes include Faulty ignition switch, Wiring issues in the start signal circuit, Defective starter relay.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0615 2004 Infiniti G35 Description

The P0615 code in a 2004 Infiniti G35 indicates a problem with the start signal circuit. This code is triggered when the Engine Control Module (ECM) detects a malfunction in the circuit responsible for sending the start signal to the ECM. The start signal is crucial for the ECM to initiate the starting process of the engine. When this circuit fails, it can lead to issues with starting the vehicle, potentially leaving you stranded.

OBDII Code P0615 2004 Infiniti G35 - Start Signal Circuit
P0615 2004 Infiniti G35 Code - Start Signal Circuit

Common Causes of P0615 2004 Infiniti G35

  1. Faulty ignition switch
  2. Wiring issues in the start signal circuit
  3. Defective starter relay
  4. Faulty ECM
  5. Poor electrical connections

Symptoms of P0615 2004 Infiniti G35

  1. Engine cranks but does not start
  2. Intermittent starting issues
  3. Engine stalls shortly after starting
  4. Check Engine Light illuminated
  5. Reduced engine performance

How to Fix P0615 2004 Infiniti G35

  1. Diagnose the start signal circuit using a multimeter to check for continuity and voltage.
  2. Inspect the ignition switch for proper operation and replace if necessary.
  3. Check the wiring in the start signal circuit for any damage or corrosion, repairing or replacing as needed.
  4. Test the starter relay and replace if it is found to be faulty.
  5. If all components check out, consider replacing the ECM as a last resort.

Cost to Fix P0615 2004 Infiniti G35

The cost of repairing a P0615 code in a 2004 Infiniti G35 can vary depending on the specific cause of the issue. On average, you can expect to pay anywhere from $100 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's best to check with local shops for a more accurate estimate.

What does this mean?

Tech Notes for P0615 2004 Infiniti G35

You can check starter relay and other fuses first.

When is the Code Detected?

The P0615 codes is detected when park/neutral (PNP) relay (starter relay) is switched “ON” other than at “P” or “N” position. (Or when switched “OFF” at “P” or “N” position).

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0615 2004 Infiniti G35 Code

1. What does the OBDII code P0615 mean on a 2004 Infiniti G35?

P0615 indicates an issue with the start signal circuit, which involves the communication between the ignition switch, starter relay, and Engine Control Module (ECM).

2. What are the common symptoms of the P0615 code on a 2004 Infiniti G35?

Symptoms may include the engine not starting, intermittent starting issues, or no response when turning the ignition key.

3. What causes the P0615 code on a 2004 Infiniti G35?

Common causes include a faulty starter relay, damaged wiring or connectors in the start signal circuit, a defective ignition switch, or a malfunctioning ECM.

4. How can I diagnose the P0615 code on my Infiniti G35?

Start by checking the starter relay, inspecting the wiring and connectors in the start signal circuit, and using a multimeter to test for proper voltage and continuity.

5. Can a dead battery trigger the P0615 code on a 2004 Infiniti G35?

While a dead battery itself won’t trigger P0615, low voltage or poor battery connections can cause starting issues that may mimic the symptoms.

6. How do I fix the P0615 code on a 2004 Infiniti G35?

Repairs may include replacing the starter relay, repairing damaged wiring, cleaning or reconnecting loose connectors, or, in rare cases, replacing the ECM.

7. Is it safe to drive with the P0615 code on my Infiniti G35?

The P0615 code usually prevents the engine from starting, so driving is typically not possible until the issue is resolved.

8. How much does it cost to repair the P0615 code on a 2004 Infiniti G35?

Repair costs can vary, ranging from $50 to $200 for simpler fixes like a relay or wiring repair, up to $500 or more if the ECM needs replacement.

9. Can I clear the P0615 code without repairing the issue?

Clearing the code with a scan tool may reset the warning temporarily, but the issue will likely recur unless the root cause is addressed.

10. What tools are needed to troubleshoot the P0615 code on a 2004 Infiniti G35?

Essential tools include an OBDII scanner, a multimeter for testing voltage and continuity, and basic hand tools for accessing and inspecting the starter circuit components.

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