How to diagnose p0120 TP sensor 1 malfunction?

This test tutorial will help you diagnose a P0120: Throttle Position (TP) Sensor 1 Malfunction with the Throttle Actuator Control (TAC) Throttle Body in a step-by-step manner using only a multimeter.

What are the causes of the p0220 code?

Throttle/pedal position sensor/switch circuit B malfunction. The P0220 code means that the vehicle’s powertrain control module has detected a voltage or resistance reading that is outside of specifications that were set by the manufacturer for this circuit. What are the causes of the P0220 code?

Do you need to replace the throttle sensor on a p0220?

A common mistake when diagnosing the P0220 would be to replace the throttle position sensor, the pedal position sensor, or both since these parts are mentioned in the actual definition. This can often times lead to a misdiagnosis. Just because a part is mentioned in a trouble code definition does not mean that that is the part causing the problem.

Why does my Chevy Silverado have a TAC code p1516?

A vehicle may be brought into the dealer for a reduced power message, and DTCs P0120, P0220, P1516, P2101, or P2135. The Throttle Actuator Control (TAC) / throttle body type trouble codes, may be caused by a loose wiring crimp at the throttle body connector, or a broken throttle body circuit.

This test tutorial will help you diagnose a P0120: Throttle Position (TP) Sensor 1 Malfunction with the Throttle Actuator Control (TAC) Throttle Body in a step-by-step manner using only a multimeter.

What causes a p0220 TPS B circuit malfunction?

Possibly starts and stalls Potential causes of the P0220 code include: Sticking throttle return spring MAP or TPS connector corrosion Misrouted harness causing chafing If you have access to a scan tool, with KOEO (Key on engine off) observe the TPS voltage.

What is the p0220 TPS signal voltage at WOT?

When the throttle is closed the signal is near .45 volts. At WOT (Wide Open Throttle) the TPS signal voltage will approach a full 5 volts. When the PCM sees a voltage that is outside of normal operating range, P0220 will set.

What is the throttle position sensor 1 malfunction?

P0120: Throttle Position (TP) Sensor 1 Malfunction. Lack of power when accelerating the engine. The Throttle Position (TP) Signal is less than 0.37 Volts or more than 4.51 Volts (for more than 1 second). You’ll see the message center display: ‘Reduced Engine Power’ (and of course the engine will operate in Reduced Engine Power mode).

Where is the p1516 fault code on a car?

If the P1516 is the only active fault code present, and there are no updates/TSBs for your particular vehicle, then the next step is to locate the Throttle Actuator Position Sensor (TAPS) on your particular vehicle, which is usually on the side of the throttle body. Visually inspect the connectors and wiring.

What is the p2101 code for throttle actuator?

P2101 – Throttle Actuator Position Performance – this code will set anytime the voltage returned from the throttle actuator postion sensor does not match what is in PCM memory for a given amount of time.

When does a GM pickup throttle position sensor go bad?

If your GM pickup (SUV or van) has the mechanical throttle body (with an accelerator cable) and you need to test the throttle position sensor (TPS), then the article you may need is this one: TPS Test. There are several symptoms, when the Throttle Position Sensor 2 (B) goes bad, that you’re gonna’ see/feel.

What does p1516 mean on a GMC Hummer?

If at .5 volts, the engine is said to be at idle speed. The voltage will vary based upon driver input. Code P1516 is a manufacturer’s specific code, mostly utilized by General Motors products, namely Buick, Chevrolet, GMC, Hummer and Saturn. This lets you know that diagnosing this condition may be different between manufacturer’s vehicles.

When does p1516 set the throttle position?

In these instances, P1516 will set when the voltage being returned by the sensor does not match what is being received by the actual throttle position sensor or in some cases, it may be a calculated throttle position. This particular code can set if the voltage changes from normal to 0 volts or 5 volts for a very short period of time.