Engine-Codes - Generic - P0470

P0470 Code - Exhaust Pressure Sensor Malfunction

- Code Popularity: 21,643 Views
- Repair Importance Level: 2/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P0470?

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 Exhaust Back Pressure Sensor
  • Exhaust Back Pressure Sensor harness is open or shorted
  • Exhaust Back Pressure Sensor circuit poor electrical connection

Code Tech Notes

Replacing the exhaust back pressure usually takes care of the problem

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How to Fix the DTC P0470?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0470 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

When is the Code Detected?

An Exhaust Back Pressure (EBP) signal that is detected out of range (high or low) by the Engine Control Module (ECM) will cause the engine to ignore the EBP signal and disable exhaust back pressure operation.

What are Code Possible Symptoms?

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

What Does the P0470 Code Mean?

The Exhaust Back Pressure (EBP) sensor is a variable capacitance sensor that, when supplied with a 5-volt reference signal from the Engine Control Module (ECM), produces a linear analog voltage signal that indicates pressure.
The EBP sensor's primary function is to measure exhaust back pressure so that the ECM can control the exhaust back pressure regulator (EPR) when needed.

P0470 Code - Exhaust Pressure Sensor Malfunction

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Code P0470 Information for Specific Makes

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