266-1467 Caterpillar Rotary Throttle / Position Sensor (TPS)—designed for Cat C9, C13, and similar engines and construction equipment—detects the throttle pedal/actuator angle and outputs a PWM signal. I. Core Parameters and Specifications

OE Model: 266-1467 (Genuine Cat Part; also written as 2661467)

Type: Rotary Position Sensor (Throttle Position Sensor / TPS)

Function: Detects the rotational angle of the throttle pedal/actuator and outputs a PWM signal to the ECM to control fuel injection volume.

Electrical Interface: 3-pin waterproof connector

Rotational Range: 72° (Medium Load)

Output Signal: PWM (Pulse Width Modulation)

Structure: Shaftless (Non-contact sensing)

Compatible System: Cat Electronic Fuel Injection (EFI) Engine Control System

II. Compatible Engines and Machine Models (High-Frequency Applications)

Engines: C9, C9.3, C13, C32, C4.4

Wheel Loaders: 906H/907H/908H, 910K/914K, 963/973 Series

Articulated Trucks: 725, 730, 735, 740

Backhoe Loaders: 420E, 430E, 450E

Pavers / Compactors: AP-1000E, CB-44B/54B/66B Series

III. Alternative Models and Suppliers

Table

Type Alternative Model Description

Genuine OEM Equivalent 2661467 Cat internal part number; fully interchangeable.

V. Fault Symptoms and Troubleshooting

Common Faults:

Unstable engine idle, lack of acceleration power, emission of black smoke.

Delayed or non-existent throttle response.

Diagnostic Codes: P0122/P0123 (Throttle Position Sensor Circuit Fault).

Troubleshooting Steps:

Check the 3-pin connector for looseness, corrosion/oxidation, or water ingress.

Measure Power Supply: A 5V reference voltage should be present.

Measure Signal Output: The PWM signal should vary linearly as the throttle is depressed.

Signal Abnormal → Replace the sensor; Signal Normal → Check the wiring harness or the ECM.