AutoCodes – Chevrolet – P0652 2014 Chevrolet Silverado

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

Quick Answer

The Engine Control Module (ECM) has four (4) internal 5 Volt reference circuits (Some models have two (2) internal 5 Volt reference circuits). Common causes include Faulty Sensor on 5 Volt circuit, Sensor on 5 Volt circuit harness is open or shorted, Sensor on 5 Volt circuit poor electrical connection. 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 Sensor on 5 Volt circuit, Sensor on 5 Volt circuit harness is open or shorted, Sensor on 5 Volt circuit poor electrical connection.
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.

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Code Popularity 298

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 17, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0652 2014 Chevrolet Silverado Description

The Engine Control Module (ECM) has four (4) internal 5 Volt reference circuits (Some models have two (2) internal 5 Volt reference circuits). Each internal reference circuit provides external 5 Volt reference circuits for more than one sensor. A short to ground or short to voltage on one external 5 Volt reference circuit can affect all the components connected to the same internal 5 Volt reference circuit. The Diagnostic Trouble Code (DTC) will be set when the ECM detects a short to voltage or ground on any of the 5 Volt reference circuits for greater than 0.5 s.

OBDII Code P0652 2014 Chevrolet Silverado - 5 Volt Reference 2 Circuit Low Voltage - AutoCodes.com — P0652 2014 Chevrolet Silverado Code - 5 Volt Reference 2 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0652 2014 Chevrolet Silverado?

Faulty Sensor on 5 Volt circuit
Sensor on 5 Volt circuit harness is open or shorted
Sensor on 5 Volt circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0652 2014 Chevrolet Silverado?

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

What does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0652 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0652 2014 Chevrolet Silverado code?

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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.