P1815 Infiniti Code - Manual Mode Switch
Quick Answer
Manual Mode Switch is installed in A/T device. Common causes include Faulty Manual Mode Switch (Built into A/T control device), Faulty Position Select Switch (Built into A/T control device), Manual Mode Switch harness is open or shorted. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P1815 Infiniti indicates Manual Mode Switch.
- Common causes
- Common causes include Faulty Manual Mode Switch (Built into A/T control device), Faulty Position Select Switch (Built into A/T control device), Manual Mode Switch harness is open or shorted.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P1815 Infiniti Description
What are the Possible Causes of the DTC P1815 Infiniti?
- Faulty Manual Mode Switch (Built into A/T control device)
- Faulty Position Select Switch (Built into A/T control device)
- Manual Mode Switch harness is open or shorted
- Manual Mode Switch circuit poor electrical connection
How to Fix the DTC P1815 Infiniti?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1815 Infiniti code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1815 Infiniti code?
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Information for Specific Infiniti Models
- P1815 2003 Infiniti G35 — Manual Mode Switch
- P1815 2004 Infiniti G35 — Manual Mode Switch
- P1815 2005 Infiniti G35 — Manual Mode Switch
- P1815 2006 Infiniti G35 — Manual Mode Switch
Frequently Asked Questions about P1815 Infiniti Code
1. What does the OBDII code P1815 mean for an Infiniti vehicle?
P1815 indicates an issue with the Manual Mode Switch circuit, which is part of the transmission system in vehicles equipped with a manual shift mode.
2. What are the symptoms of code P1815 in an Infiniti?
Symptoms may include the inability to shift into manual mode, erratic shifting, the transmission being stuck in a specific gear, or the illumination of the check engine light.
3. What causes the P1815 code to appear?
Common causes include a faulty manual mode switch, damaged or corroded wiring or connectors, or an issue with the transmission control module (TCM).
4. How do you diagnose an Infiniti with a P1815 code?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the manual mode switch and its wiring for damage, and testing the switch for proper operation using a multimeter.
5. Can driving with code P1815 cause further damage?
While it may not immediately damage the vehicle, driving with this issue can lead to poor transmission performance and potentially strain the transmission system over time.
6. How can the P1815 code be fixed?
Repairs may include replacing the manual mode switch, repairing or replacing damaged wiring or connectors, and, in rare cases, reprogramming or replacing the TCM.
7. How much does it cost to repair code P1815 on an Infiniti?
The repair cost can range from $100 to $400 depending on whether the issue is with the switch, wiring, or TCM. Diagnostic fees may also apply.
8. Can I fix the P1815 code on my Infiniti myself?
If you have experience with automotive repairs and the right tools, you may be able to replace the manual mode switch or repair wiring on your own. However, professional diagnosis is recommended.
9. Is code P1815 specific to Infiniti vehicles?
P1815 is not exclusive to Infiniti but is more commonly associated with Nissan and Infiniti models due to their shared transmission systems.
10. Will clearing the P1815 code with a scanner fix the issue?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.
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