AutoCodes – Chevrolet – P037B 2017 Chevrolet Silverado

P037B 2017 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 2017 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 187

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 Jun 17, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P037B 2017 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 2017 Chevrolet Silverado - Wait To Start Indicator Control Circuit High Voltage - AutoCodes.com — P037B 2017 Chevrolet Silverado Code - Wait To Start Indicator Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P037B 2017 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 2017 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 2017 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 2017 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 P037B 2017 Chevrolet Silverado Code

1. What does the OBDII code P037B mean for a 2017 Chevrolet Silverado?

P037B indicates an issue with the "Wait to Start" indicator control circuit, specifically a high voltage condition.

2. What are the common symptoms of code P037B?

Symptoms may include the "Wait to Start" light not functioning properly, delayed engine starting in cold weather, or no noticeable symptoms in some cases.

3. What causes the P037B code to be triggered?

Common causes include a faulty "Wait to Start" indicator bulb, damaged wiring or connectors in the control circuit, or a malfunctioning engine control module (ECM).

4. Can I drive my 2017 Chevrolet Silverado with a P037B code?

While the vehicle may still operate, ignoring this code could result in harder starts in cold weather or potential damage to the glow plug system.

5. How do I diagnose the P037B code?

Start by inspecting the wiring and connectors in the "Wait to Start" circuit for damage or corrosion. If no issues are found, test the indicator bulb and related components.

6. How is the P037B code repaired?

Repairs typically involve replacing a damaged indicator bulb, repairing or replacing faulty wiring, or, less commonly, addressing issues with the ECM.

7. How much does it cost to fix the P037B code?

Repair costs can vary but generally range from $50 to $200, depending on whether the issue is with the indicator bulb, wiring, or another component.

8. Can a bad glow plug module cause the P037B code?

While uncommon, a malfunctioning glow plug module could indirectly contribute to issues with the "Wait to Start" indicator circuit.

9. Will clearing the P037B code fix the issue?

Clearing the code may temporarily remove it, but the underlying problem must be addressed to prevent it from returning.

10. Do I need special tools to fix the P037B code?

Basic tools like a multimeter for voltage testing and an OBDII scanner for diagnostics are helpful. Complex issues may require professional equipment or expertise.