Parts for your 2010 Nissan Pathfinder-Throttle position sensors

2010 Nissan Pathfinder throttle position sensor (TPS)

Based on technical references, the 2010 Nissan Pathfinder (R51) does use a throttle position sensor. The Nissan Factory Service Manual for the 2010 Pathfinder (EC section, “Electronic Throttle Control System”) specifies dual throttle position sensors integrated into the throttle control actuator (the electronic throttle body). Nissan diagnostic charts for this model include TPS-related DTCs such as P0120, P0220 and P2135. Nissan parts catalogues also show the TPS as non-serviceable separately, replacement is via the complete throttle body assembly for engines like the VQ40DE (4.0 V6) and VK56DE (5.6 V8), and a similar electronically controlled throttle valve on diesel variants.

On a 2010 Pathfinder, the throttle position sensor lives inside the electronic throttle body and constantly reports how far the throttle plate has opened. The engine computer cross-checks this with the accelerator pedal position sensors to deliver smooth power, keep fuel use tidy, and meet emissions targets. When it’s all behaving, throttle response feels natural, gear changes are cleaner, and cruise control works as it should.

If the TPS signal goes flaky, drivers can notice lazy acceleration, hunting or high idle, random surges, poor economy, or the vehicle dropping into limp mode. The check engine light often tags along with codes like P0120/P0220 (TPS circuits), P2135 (sensor correlation), or sometimes P2101/P2118 (throttle actuator range/power).

Because the TPS is built into the throttle body, there’s no adjustment and it’s not a separate bolt-on part. If confirmed faulty, the fix is to replace the throttle body assembly. Before going that far, a good workshop will check the 5‑volt reference, grounds and signal wiring, and inspect the connector for moisture or spread pins. A careful throttle body clean can also help sticky plates return to proper movement—use a sensor-safe cleaner and avoid flooding the motor or electronics.

After cleaning or replacement, a throttle/idle relearn (Idle Air Volume Learn) is required so the ECU knows the new plate position. This can be done with a capable scan tool or by following the factory pedal/ignition sequence. Keep battery voltage stable during the procedure.

There’s no set replacement interval for the TPS on these Pathfinders. As part of routine servicing, it’s smart to check the intake duct for cracks, ensure grounds are clean and tight, and consider a throttle body clean every 40,000–60,000 kilometres. If the unit is replaced, use a quality gasket, torque the bolts to spec, and complete the relearn so it drives beautifully from the first start.

• Common TPS-related DTCs: P0120, P0220, P2135, P2101, P2118
• Service actions: inspect wiring/connectors, clean throttle body, replace assembly if faulty, perform relearn

FAQ

Does the 2010 Pathfinder’s TPS replace separately from the throttle body?
No. On this model the TPS is part of the electronic throttle body assembly. If the sensor fails or the internal tracks go out of spec, the usual repair is to replace the complete throttle body. That approach restores the motor, gears and dual sensors as a matched unit, which keeps the ECU happy and reduces repeat faults.

Do I need a relearn after cleaning or replacing the throttle body?
Yes, a throttle/idle relearn is essential. It teaches the ECU the fully closed and target idle positions of the new or freshly cleaned plate. Without it, idle can be rough, revs may hang, and the vehicle might throw a code. A scan tool makes it straightforward, but the factory pedal sequence can work if followed precisely with good battery voltage.

What symptoms and codes point to a TPS issue on a 2010 Pathfinder?
Drivers often see a check engine light, sluggish throttle, surging at idle, or limp-home behaviour. Typical codes include P0120/P0220 (TPS circuits) and P2135 (throttle/pedal correlation). Occasionally P2101 or P2118 show up if the actuator is unhappy. Live data will usually reveal mismatched or jumpy throttle angle signals.