P2565 Turbocharger Control Position Sensor Circuit High Signal

P2565 Turbocharger Control Position Sensor Circuit High Signal

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OBD-II DTC Datasheet

Turbocharger Position Sensor Circuit High Signal

What does this mean?

This Diagnostic Trouble Code (DTC) is a generic transmission code, which means it applies to OBD-II equipped vehicles with a turbocharger (Ford, GMC, Chevrolet, Hyundai, Dodge, Toyota, etc.). Although general in nature, the specific repair steps may differ depending on the brand / model.

This DTC usually applies to all OBDII equipped turbocharged engines, but is more common in some Hyundai and Kia vehicles. The turbocharger control position sensor (TBCPS) converts the turbocharging pressure into an electrical signal to the powertrain control module (PCM).

The Turbocharger Control Position Sensor (TBCPS) provides additional information about the turbo boost pressure to the transmission control module or PCM. This information is commonly used to fine tune the amount of boost the turbocharger delivers to the engine.

The boost pressure sensor provides the PCM with the rest of the information needed to calculate the boost pressure. Whenever the voltage on the signal wire of the TBCPS sensor exceeds the set level (usually more than 4.8V), the PCM sets code P2565. This code is considered a circuit malfunction only.

Troubleshooting steps may vary depending on the manufacturer, sensor type, and wire colors to the sensor.

symptoms

Symptoms of a P2565 code may include:

• Fault indicator light is on
• Low productivity
• Oscillations during acceleration
• Decreased fuel economy

reasons

Possible reasons for setting this code:

• Short to power in the TBCPS signal circuit - Possible
• Open in ground circuit at TBCPS - Possible
• Faulty TBCPS sensor - likely
• Failed PCM – Unlikely

Diagnostic and repair procedures

A good starting point is always to check the Technical Service Bulletins (TSB) for your particular vehicle. Your problem may be a known issue with a known manufacturer-released fix and could save you time and money while troubleshooting.

Then find the TBCPS sensor on your specific vehicle. This sensor is usually screwed or screwed directly onto the turbocharger housing. Once found, visually inspect the connector and wiring. Look for scratches, scuffs, exposed wires, burn marks, or molten plastic. Disconnect the connector and carefully inspect the terminals (metal parts) inside the connector. See if they look burnt or have a green tint indicating corrosion. If you need to clean the terminals, use an electrical contact cleaner and a plastic bristle brush. Allow to dry and apply electrical grease where the terminals touch.

If you have a scan tool, clear the DTCs from memory and see if P2565 returns. If this is not the case, then there is most likely a connection problem.

If the P2565 code does return, we will need to test the TBCPS sensor and associated circuits. With the key OFF, disconnect the electrical connector at the TBCPS sensor. Connect the black lead from the DVM to the ground terminal on the harness connector of the TBCPS. Connect the red lead of the DVM to the power terminal on the harness connector of the TBCPS sensor. Turn on the engine, turn it off. Check manufacturer specifications; the voltmeter should read either 12 volts or 5 volts. If not, repair open in the power or ground wire or replace the PCM.

If the previous test passes, we will need to check the signal wire. Without removing the connector, move the red voltmeter wire from the power wire terminal to the signal wire terminal. The voltmeter should now read 5 volts. If not, repair open in signal wire or replace PCM.

If all previous tests pass and you continue to receive the P2565, it will most likely indicate a faulty TBCPS sensor, although the failed PCM cannot be ruled out until the TBCPS sensor is replaced. If you are unsure, seek help from a qualified automotive diagnostician. To install correctly, the PCM must be programmed or calibrated for the vehicle.

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