P2130 Throttle Position Sensor / Switch F Circuit Malfunction

P2130 Throttle Position Sensor / Switch F Circuit Malfunction

OBD-II DTC Datasheet

Malfunction of a chain of the sensor of position of a butterfly valve / pedal / switch "F"

What does this mean?

This Diagnostic Trouble Code (DTC) is a generic transmission code, which means it applies to OBD-II equipped vehicles. Although general, specific repair steps may differ depending on the brand / model.

The TPS (Throttle Position Sensor) is a potentiometer mounted on the throttle body. It detects the angle of the throttle valve. When the throttle valve moves, the TPS sends a signal to the PCM (Powertrain Control Module). Typically a three-wire sensor: 5V reference from the PCM to the TPS, ground from the PCM to the TPS, and signal return from the TPS to the PCM.

The TPS sends throttle position information back to the PCM over this signal wire. When the throttle is closed, the signal is about 45 volts. With WOT (Wide Open Throttle), the TPS signal voltage approaches the full 5 volts. When the PCM detects a voltage outside the normal operating range, P2130 is set. The letter "F" refers to a specific circuit, sensor, or section of a specific circuit.

NOTE: The PCM knows that any large change in throttle position means a corresponding change in manifold pressure (MAP). On some models, PCM will monitor MAP and TPS for comparison. This means that if the PCM sees a large percentage change in throttle position, it expects to see a corresponding change in manifold pressure and vice versa. If he does not see this comparative change, P2130 may be set. This does not apply to all models.

symptoms

Possible symptoms include:

• MIL Illumination (Malfunction Indicator)
• Idle or highway misfire
• Poor idle quality
• May not be idle
• Probably starts and stalls

reasons

Possible causes of a P2130 code include:

• Stuck throttle return spring
• Corrosion on MAP or TPS connector
• An incorrectly routed belt causes chafing
• Bad TPS
• Bad PCM

Possible solutions

If you have access to a scan tool, observe the TPS voltage with KOEO (Engine Off Key). With the throttle closed, the voltage should be about 45 V. It should gradually rise to about 4.5-5 volts as you push the throttle. Sometimes, only the oscilloscope can capture the periodic voltage surges of the TPS signal. If you notice a failure in the TPS sweep voltage, replace the TPS.

NOTE: Some TPS sensors require fine tuning. If you are not comfortable using a DVOM (digital volt ohm meter) to tune a new TPS, it is best to take the vehicle to a shop. If the voltage does not read 45 volts (+ or - 3 volts or so) with the throttle closed, or if the reading is stuck, disconnect the TPS connector. Using KOEO, check for 5 volt reference voltage at the connector and a good ground. The signal circuit can be checked by moving the fusible link between the TPS connector ground circuit and the signal circuit. If the TPS reading on the scan tool now reads zero, replace the TPS. However, if this does not change the reading to zero, check for an open or short in the signal wire, and if none is found, suspect a bad PCM. If tampering with the TPS harness causes any change in idle, suspect a bad TPS.

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