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AutoCodes - Generic - P128D

P128D Code - Fuel Rail Temperature Sensor 2 Signal Message Counter Incorrect

- Code Popularity: 3,302 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P128D?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Fuel Rail Temperature Sensor 2
  • Fuel Rail Temperature Sensor 2 harness is open or shorted
  • Fuel Rail Temperature Sensor 2 circuit poor electrical connection
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How to Fix the DTC P128D?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P128D code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P128D Description

The fuel rail pressure sensor transmits fuel pressure and temperature information by serial data. The fuel rail pressure sensor internal microprocessor allows 4 separate sensor outputs from one 3 wire sensor. The Engine Control Module (ECM) supplies the fuel rail pressure sensor with a 5 V reference circuit, a low reference circuit, and an asynchronous signal/serial data circuit. The asynchronous signal means communication is only going from the fuel rail pressure sensor to the ECM. The ECM decodes the serial data signal into separate voltages which are displayed on a scan tool as the voltage inputs from the Fuel Temperature Sensor, Fuel Rail Pressure Sensor and Fuel Rail Pressure Sensor 2.

OBDII Code P128D - Fuel Rail Temperature Sensor 2 Signal Message Counter Incorrect - AutoCodes.com
P128D Code - Fuel Rail Temperature Sensor 2 Signal Message Counter Incorrect

Need More Information on the Code?

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Information for Specific Makes

  • P128D Buick Fuel Rail Temperature Sensor 2 Signal Message Counter Incorrect  📷
  • P128D Cadillac Fuel Rail Temperature Sensor 2 Signal Message Counter Incorrect  📷
  • P128D Chevrolet Fuel Rail Temperature Sensor 2 Signal Message Counter Incorrect  📷
  • P128D Dodge Transmission Control Module Power Control Circuit Open
  • P128D GMC Fuel Rail Temperature Sensor 2 Signal Message Counter Incorrect  📷

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Code P128D comments

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