What is P0120 code?

What is P0120 code?

P0120 is the generic OBD-II code which indicates that the Engine Control Module (ECM) has seen the TPS sensor circuit A output voltage going below or above the sensor’s expected range, or is chattering when compared to TPS sensor circuit B.

What does the p2135 code mean on a Chevy?

Both TP sensors signal voltage are low at the close throttle and increase as the throttle opens. When the control module detects that the TP sensor 1 signal and TP sensor 2 signals disagree or the signal voltages are outside the predetermined range, the P2135 code is set.

What does the p2135 GMC throttle position sensor mean?

P2135 GMC Meaning The throttle Position (TP) sensors 1 and 2 are potentiometer type sensors each with 3 circuits. – A 5 – volt reference circuit. – A low reference circuit. – A signal circuit The TP sensors are used to determine the throttle plate angle for various engine management systems.

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.

How much does it cost to repair a p2135 GMC?

Cost of diagnosing the P2135 GMC code Labor: 1.0 The cost of diagnosing the P2135 GMC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour. P2135 GMC Possible Symptoms Engine Light ON (or Service Engine Soon Warning Light)

What are the p0120 and p2135 codes?

I have 2 codes P0120 and P2135, I first replace the pigtail and TPS sensor same problem and codes (Reduced engine power). so i bit the bullet and replaced the throttle body along with another new TPS (it came attached ) still same problem…any help?… codes P0340 and P0120 please help!

How does the TPS work on a Nissan p0120?

The TPS sends the throttle position information back to the PCM on this signal wire. 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.

What causes a p0120 TPS a circuit malfunction?

Potential causes of the P0120 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 p0120 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, P0120 will set. NOTE: The PCM knows that any large change in throttle position means a cooresponding change in manifold pressure (MAP).

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