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P0656 Chevrolet Code - Fuel Level Output Circuit Malfunction

- Code Popularity: 15,287 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0656 Chevrolet?

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 Level Gauge
  • Fuel Level Gauge harness is open or shorted
  • Fuel Level Gauge circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)
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How to Fix the DTC P0656 Chevrolet?

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 P0656 Chevrolet 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.

When is the Code Detected?

If the fault detection circuit senses a voltage other than what the PCM expects, the fault line status changes causing the P0656 code will set.

What are Code Possible Symptoms?

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

Code P0656 Chevrolet Description

The Powertrain Control Module (PCM) controls the fuel gauge through the fuel gauge control circuit. The PCM supplies a pulse width modulated (PWM) duty cycle signal to control the fuel gauge. The PCM receives the fuel level information from the fuel level sensor.
The PCM controls the gauge by grounding the control circuit via an internal switch called a driver. The primary function of the driver is to supply the ground for the controlled component. Each driver has a fault line which the PCM monitors.

OBDII Code P0656 Chevrolet - Fuel Level Output Circuit Malfunction - AutoCodes.com
P0656 Chevrolet Code - Fuel Level Output Circuit Malfunction

Need More Information on the Code?

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Code P0656 Chevrolet comments

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