P1816 Infiniti Code - Park/Neutral Position Switch
Quick Answer
The Automatic Transmission (A/T) Park/Neutral Position (PNP) switch transmits the A/T position indicator signal (PNP switch signal) via CAN communication to the transfer control unit. Common causes include Faulty Park/Neutral Position Switch, Park/Neutral Position Switch harness is open or shorted, Park/Neutral Position Switch circuit poor electrical connection. 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
- P1816 Infiniti indicates Park/Neutral Position Switch.
- Common causes
- Common causes include Faulty Park/Neutral Position Switch, Park/Neutral Position Switch harness is open or shorted, Park/Neutral Position Switch circuit poor electrical connection.
- 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.
Code P1816 Infiniti Description
What are the Possible Causes of the DTC P1816 Infiniti?
- Faulty Park/Neutral Position Switch
- Park/Neutral Position Switch harness is open or shorted
- Park/Neutral Position Switch circuit poor electrical connection
How to Fix the DTC P1816 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 P1816 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.
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Frequently Asked Questions about P1816 Infiniti Code
1. What does the OBDII code P1816 mean on an Infiniti?
P1816 indicates a malfunction in the Park/Neutral Position (PNP) Switch, which monitors the gear selector position to ensure proper transmission operation.
2. What are the symptoms of code P1816 on an Infiniti?
Common symptoms include difficulty starting the vehicle, the transmission being stuck in one gear, or erratic shifting behavior.
3. What causes the P1816 code to appear on an Infiniti?
Potential causes include a faulty Park/Neutral Position Switch, damaged wiring or connectors, or an issue with the transmission control module (TCM).
4. Can I drive my Infiniti with a P1816 code?
Driving with this code is not recommended, as it can cause transmission issues or prevent the vehicle from starting reliably.
5. How is the P1816 code diagnosed on an Infiniti?
A technician will inspect the PNP switch, check for damaged wiring or connectors, and use a scan tool to monitor transmission-related data.
6. How do you fix the P1816 code on an Infiniti?
Repairs may include replacing the Park/Neutral Position Switch, repairing damaged wiring, or reprogramming/updating the TCM if necessary.
7. What tools are needed to repair a P1816 code?
Basic tools include a multimeter for testing wiring, a scan tool for reading and clearing codes, and possibly a wrench or socket set to replace the PNP switch.
8. How much does it cost to fix a P1816 code on an Infiniti?
The cost can range from $100 to $300 for parts and labor, depending on whether the PNP switch or other components need replacement.
9. Can a P1816 code trigger the check engine light on an Infiniti?
Yes, the P1816 code will typically trigger the check engine light or a related warning indicator on the dashboard.
10. Is the P1816 code specific to Infiniti vehicles?
No, while it is common on Infiniti models, this code can also appear on other vehicles with similar Park/Neutral Position Switch systems.
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