OE Quality
60-Day Returns

Standard Ignition TH121 Throttle Position Sensor
Reliable Throttle Position Sensor for Nissan D21, Pathfinder, and Pickup
The Standard Ignition TH121 throttle position sensor is designed to provide accurate throttle position readings for Nissan vehicles including the D21, Pathfinder, and Pickup models. This sensor ensures proper engine performance by delivering precise data to the vehicle’s engine control unit.
- Connector Gender: Female; female for secure connections
- Connector Quantity: 2 plug-in connectors for reliable interface
- Terminal Gender: Male blade terminals for consistent electrical contact
- Terminal Quantity: 6 terminals to support multiple signal pathways
- Terminal Type: Blade terminals designed for durability and ease of installation
Detailed Product Description
The Standard Ignition TH121 throttle position sensor features two female plug-in connectors that interface with the vehicle’s wiring harness, ensuring a stable and secure connection. It includes six male blade terminals that provide multiple contact points for accurate signal transmission. This design supports consistent throttle position feedback, which is critical for engine management systems in Nissan D21, Pathfinder, and Pickup models. The sensor’s plug-in connector type simplifies installation and replacement, reducing downtime during maintenance.
Common Applications and Issues Addressed
- Helps resolve erratic engine idling caused by faulty throttle position readings
- Addresses hesitation or stalling during acceleration in Nissan D21, Pathfinder, and Pickup vehicles
- Improves throttle response and fuel efficiency by providing accurate sensor data
- Prevents check engine light triggers related to throttle position sensor faults
- Supports smooth transmission shifting by maintaining proper throttle input signals
Installation Notes and Tips
When installing the Standard Ignition TH121 throttle position sensor, ensure the connectors are fully seated to avoid intermittent electrical issues. The female plug-in connectors and male blade terminals are designed for straightforward replacement without the need for special tools. Verify sensor alignment and secure mounting to prevent damage from vibration or movement during vehicle operation.
Quality Assurance and Warranty
Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The TH121 throttle position sensor undergoes rigorous quality control testing to maintain consistent functionality. Please refer to Standard Ignition’s warranty policy for specific coverage details.
| Brand | Standard Ignition |
|---|---|
| Part Number | TH121 |
| Connector Gender | Female; female |
| Connector Quantity | 2 |
| Connector Type | Plug in |
| Terminal Gender | Male |
| Terminal Quantity | 6 |
| Terminal Type | Blade terminals |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1995 | Nissan | Pathfinder | Automatic | 3.0L | V6 | N/A | |
| 1995 | Nissan | Pickup | Automatic | 3.0L | V6 | N/A | |
| 1994 | Nissan | D21 | Automatic | 3.0L | V6 | N/A | |
| 1994 | Nissan | Pathfinder | Automatic | 3.0L | V6 | N/A | |
| 1993 | Nissan | D21 | Automatic | 3.0L | V6 | N/A | |
| 1993 | Nissan | Pathfinder | Automatic | 3.0L | V6 | N/A | |
| 1992 | Nissan | D21 | Automatic | 3.0L | V6 | N/A | |
| 1992 | Nissan | Pathfinder | Automatic | 3.0L | V6 | N/A | |
| 1991 | Nissan | D21 | Automatic | 3.0L | V6 | N/A | |
| 1991 | Nissan | Pathfinder | Automatic | 3.0L | V6 | N/A | |
| 1990 | Nissan | D21 | Automatic | 3.0L | V6 | N/A | |
| 1990 | Nissan | Pathfinder | Automatic | 3.0L | V6 | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.