Short answer
On a Toyota with a cable throttle, the TPS is usually a separate sensor on the throttle body; on an electronic throttle it is usually built in. Diagnose with codes and a sweep test. For one data point on cost, RepairPal estimates $247 to $355 for a 2026 Toyota RAV4 TPS replacement, mostly labor. Buy Toyota genuine or an aftermarket sensor matched to your VIN.
First: which kind of throttle does your Toyota have?
Open the hood and follow the intake tube from the air filter to where it meets the engine. That is the throttle body. If a cable from the gas pedal connects to a pulley on it, your Toyota has a cable throttle and the TPS is normally a separate sensor on the end of the throttle shaft. If there is no cable and the throttle body has a motor housing, it is an electronic (drive by wire) throttle, and the position sensors are usually built in. TPS vs throttle body explains the difference.
What is specific to Toyota
RepairPal publishes a TPS replacement estimate for the RAV4: $247 to $355 for a 2026 model, with labor ($163 to $239) larger than parts ($84 to $115) (RepairPal, updated September 3, 2026). That split is typical of a separate sensor where access, not the part, drives the bill.
If your Toyota has an electronic throttle and throws P2135, look at the throttle body connector and the pedal sensor before buying a throttle body. See P2135.
Toyota TPS symptoms and codes
The symptoms are the same as on any vehicle: hesitation, surging, a rough or high idle, stalling, odd automatic shifts, and reduced power on electronic throttles. The generic codes are the same too:
Generic OBD-II throttle position codes. Titles from OBD-Codes.com; your maker may word them differently.
| Code | Generic title | In plain English | Guide |
|---|---|---|---|
| P0120 | Throttle Position Sensor/Switch A Circuit Malfunction | The signal is outside the range the computer expects. | P0120 guide |
| P0121 | Throttle Position Sensor/Switch A Circuit Range/Performance | The signal does not match what the engine is doing (RPM, airflow). | P0121 guide |
| P0122 | Throttle Position Sensor/Switch A Circuit Low Input | The signal voltage is too low, often an open or a short to ground. | P0122 guide |
| P0123 | Throttle Position Sensor/Switch A Circuit High Input | The signal voltage is too high, often a lost ground or a short to voltage. | P0123 guide |
| P0124 | Throttle Position Sensor/Switch A Circuit Intermittent | The signal drops in and out: wiring, a connector or a worn track. | Codes hub |
| P2135 | Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation | The two sensors in an electronic throttle body disagree. | P2135 guide |
Toyota may add its own related codes and word the titles differently. Your service information has the exact set conditions.
Testing a Toyota TPS
The method is the standard one: check the 5 V reference and the ground, then back-probe the signal and sweep the throttle slowly, looking for jumps and dropouts. On electronic throttles, watch both throttle signals in live data while pressing the pedal rather than forcing the plate. Full steps: how to test a TPS sensor.
Buying a TPS for your Toyota
-
01
Toyota genuine
Best for: an exact match to the original
- Dealer parts counter or online dealer stores
- Usually the highest price
-
02
Standard Motor Products or Walker
Best for: lower-cost replacements
- Broad import coverage
- Match by part number
-
03
Bosch
Best for: a large OE supplier’s aftermarket line
- Bosch says its TPS is tested to OE standards (maker claim)
Brand notes: the TPS brand table on the home page. Cost: TPS replacement cost. Install: how to replace a TPS sensor.
Questions people ask
How much does a Toyota TPS replacement cost?
It varies by model. RepairPal estimates $247 to $355 for a 2026 Toyota RAV4 (labor $163 to $239, parts $84 to $115), updated September 3, 2026, excluding taxes and fees.
Should I buy a genuine Toyota TPS?
Genuine parts match exactly and cost more. Aftermarket sensors from makers such as Standard Motor Products, Delphi, Bosch, Walker and Dorman cost less. Whichever you choose, match the VIN or the old part number.
Is "TPS system Toyota" about this sensor?
Usually not. TPS also stands for the Toyota Production System, the manufacturing method. This page is about the throttle position sensor.
Sources
Last reviewed 2026-10-12. General guidance only: specs, procedures and fitment vary by vehicle, so confirm in your service manual and on the listing before you buy or wrench.