AutoCodes – Chevrolet – P037B 2014 Chevrolet Silverado

P037B 2014 Chevrolet Silverado Code - Wait To Start Indicator Control Circuit High Voltage

Quick Answer

Ignition voltage is supplied directly to the Wait To Start indicator. Common causes include Faulty Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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: P037B 2014 Chevrolet Silverado indicates Wait To Start Indicator Control Circuit High Voltage.
Common causes: Common causes include Faulty Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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 1,090

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P037B 2014 Chevrolet Silverado Description

Ignition voltage is supplied directly to the Wait To Start indicator. The Engine Control Module (ECM) controls the lamp 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 component being controlled. Each driver has a fault line which is monitored by the ECM. When the ECM is commanding a component ON, the voltage of the control circuit should be low, near zero volts. When the ECM is commanding the control circuit to a component OFF, the voltage potential of the circuit should be high, near battery voltage. The Diagnostic Trouble Code (DTC) will be set when the ECM detects a short to voltage on the Wait To Start Indicator Control circuit for greater than 1 s.

OBDII Code P037B 2014 Chevrolet Silverado - Wait To Start Indicator Control Circuit High Voltage - AutoCodes.com — P037B 2014 Chevrolet Silverado Code - Wait To Start Indicator Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P037B 2014 Chevrolet Silverado?

Faulty Instrument Cluster
Instrument Cluster harness is open or shorted
Instrument Cluster circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P037B 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P037B 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 P037B 2014 Chevrolet Silverado code?

Need more information on how to fix the P037B 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P037B 2014 Chevrolet Silverado Code

1. What does the OBDII code P037B mean on a 2014 Chevrolet Silverado?

P037B indicates a high voltage issue in the Wait to Start Indicator Control Circuit, which is part of the glow plug system in diesel engines.

2. What are the common symptoms of code P037B in a 2014 Chevrolet Silverado?

Common symptoms include the Wait to Start indicator not functioning properly, delayed engine starting, or the engine failing to start in cold weather.

3. What causes the P037B code to appear on a 2014 Chevrolet Silverado?

Possible causes include a faulty Wait to Start indicator bulb, damaged wiring or connectors in the control circuit, a malfunctioning glow plug control module, or a short to voltage.

4. Can code P037B affect engine performance in a 2014 Chevrolet Silverado?

Yes, it can lead to starting issues, especially in cold weather, as the glow plug system may not operate correctly.

5. How do you diagnose the P037B code on a 2014 Chevrolet Silverado?

Diagnosis involves inspecting the Wait to Start indicator bulb, checking the wiring and connectors for damage or corrosion, and testing the glow plug control module for proper functionality.

6. Is it safe to drive a 2014 Chevrolet Silverado with a P037B code?

While the truck may still be drivable, starting issues in cold weather and potential damage to the glow plug system make it advisable to address the issue promptly.

7. How can you fix the P037B code on a 2014 Chevrolet Silverado?

Repairs may include replacing the Wait to Start indicator bulb, repairing or replacing damaged wiring or connectors, or replacing a faulty glow plug control module.

8. What tools are needed to troubleshoot the P037B code on a 2014 Chevrolet Silverado?

You may need a scan tool to read and clear codes, a multimeter to check voltages, and basic hand tools for inspecting and repairing wiring or components.

9. How much does it cost to repair the P037B code on a 2014 Chevrolet Silverado?

Repair costs vary depending on the issue, but replacing a bulb or repairing wiring is generally inexpensive, while a new glow plug control module can cost several hundred dollars including labor.

10. Can a low battery cause the P037B code on a 2014 Chevrolet Silverado?

A low battery is unlikely to directly cause this code, but electrical issues such as voltage spikes or unstable power can contribute to circuit problems.