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Engine-Codes – Chevrolet – P0652 2014 Chevrolet Silverado

P0652 2014 Chevrolet Silverado Code - 5 Volt Reference 2 Circuit Low Voltage

Quick Answer

The P0652 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado indicates a 5 Volt Reference 2 Circuit Low Voltage. Common causes include Faulty 5-volt reference circuit 2 sensor, Short circuit or open circuit in the wiring harness, Corrosion or poor connections in the circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0652 2014 Chevrolet Silverado indicates 5 Volt Reference 2 Circuit Low Voltage.
Common causes
Common causes include Faulty 5-volt reference circuit 2 sensor, Short circuit or open circuit in the wiring harness, Corrosion or poor connections in the circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P0652 2014 Chevrolet Silverado Description

The P0652 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado indicates a 5 Volt Reference 2 Circuit Low Voltage. This code is typically triggered when the Engine Control Module (ECM) detects that the voltage on the 5-volt reference circuit 2 is below the specified range. The 5-volt reference circuit is crucial for various sensors and components in the vehicle to function properly. When this circuit is experiencing low voltage, it can lead to erratic sensor readings, incorrect fuel delivery, and overall poor engine performance.

OBDII Code P0652 2014 Chevrolet Silverado - 5 Volt Reference 2 Circuit Low Voltage
P0652 2014 Chevrolet Silverado Code - 5 Volt Reference 2 Circuit Low Voltage

Common Causes of P0652 2014 Chevrolet Silverado

  1. Faulty 5-volt reference circuit 2 sensor
  2. Short circuit or open circuit in the wiring harness
  3. Corrosion or poor connections in the circuit
  4. ECM malfunction
  5. Electrical issues such as a blown fuse or relay

Symptoms of P0652 2014 Chevrolet Silverado

  1. Rough idling or stalling
  2. Poor acceleration or hesitation
  3. Engine misfires
  4. Illumination of the Check Engine Light
  5. Reduced fuel efficiency

How to Fix P0652 2014 Chevrolet Silverado

  1. Begin by conducting a thorough inspection of the 5-volt reference circuit 2 and related components to identify any visible damage or loose connections.
  2. Test the voltage output of the 5-volt reference circuit using a multimeter to determine if it falls below the specified range.
  3. Replace any faulty sensors or components in the circuit, such as the throttle position sensor or manifold absolute pressure sensor.
  4. Repair or replace any damaged wiring harnesses or connectors in the circuit.
  5. Clear the DTC with a scan tool and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0652 2014 Chevrolet Silverado

The typical repair costs for addressing a P0652 code on a 2014 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of parts such as sensors or wiring harnesses can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $500. It is important to note that diagnosis time and labor rates at auto repair shops can vary, so it is advisable to check with local shops for a more accurate estimate based on your location and vehicle specifics.

What does this mean?

Tech Notes for P0652 2014 Chevrolet Silverado

Disconnecting one component at a time from the affected 5 Volt reference circuit while observing the scan tool 5 Volt Reference Circuit Status parameter may help locate the fault. The scan tool parameter will change from Malfunction to OK when the source of the fault is disconnected. If all 5 Volt reference components have been disconnected and a fault is still indicated, the fault may exist in the wiring harness.



The 5 Volt reference 2 circuit provides 5 Volt to the following sensors: (Some models may have different sensors, please consult the factory service manual for the list of sensors for your model and year)



- Brake pedal position sensor

- Crankshaft position sensor

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0652 2014 Chevrolet Silverado Code

What does the OBDII code P0652 mean for a 2014 Chevrolet Silverado?

Code P0652 indicates a low voltage condition in the 5-volt reference 2 circuit, which supplies a steady 5 volts to various engine sensors.

What are the common symptoms of P0652 in a 2014 Silverado?

Symptoms may include poor engine performance, hesitation, stalling, difficulty starting, and a lit Check Engine Light.

What causes the P0652 code to appear on a Chevrolet Silverado?

Common causes include a short to ground in the 5-volt reference circuit, a faulty sensor, a damaged wiring harness, or a failing Powertrain Control Module (PCM).

Can a bad sensor trigger the P0652 code?

Yes, a malfunctioning sensor connected to the 5-volt reference 2 circuit can cause voltage irregularities and trigger this code.

How do you diagnose a P0652 code?

Start by using a scan tool to monitor sensor data, inspecting the wiring for shorts or damage, testing the 5-volt reference circuit with a multimeter, and checking related sensors for faults.

Is it safe to drive a 2014 Silverado with a P0652 code?

Driving with this code is not recommended, as it can lead to poor engine performance and potentially cause further damage to other components.

What sensors rely on the 5-volt reference 2 circuit in a 2014 Silverado?

Sensors such as the throttle position sensor (TPS), manifold absolute pressure (MAP) sensor, and others may depend on the 5-volt reference 2 circuit.

How can you fix a P0652 code on a Chevrolet Silverado?

Repairs may include fixing shorted wires, replacing a faulty sensor, or repairing/replacing the PCM if it is determined to be the root cause.

Can a failing PCM cause the P0652 code?

Yes, a failing PCM can cause improper voltage regulation in the 5-volt reference 2 circuit and trigger this code.

How much does it cost to fix a P0652 code?

Repair costs vary depending on the cause, but fixing wiring issues might cost $100-$200, while replacing a sensor or PCM could range from $200 to $1,000 or more.

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