AutoCodes – GMC – P1512 GMC

P1512 GMC Code - Intake Manifold Runner Control Stuck Close

Quick Answer

The commanded throttle position is compared to the actual throttle position based on accelerator pedal position and possibly other limiting factors. Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly 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: P1512 GMC indicates Intake Manifold Runner Control Stuck Close.
Common causes: Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly 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 2,699

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1512 GMC Description

The commanded throttle position is compared to the actual throttle position based on accelerator pedal position and possibly other limiting factors. Both values should be within a calibrated range of each other. The Powertrain Control Module (PCM) continuously monitors the commanded and actual throttle positions. This Diagnostic Trouble Code (DTC) sets if the values are greater than the calibrated range.

OBDII Code P1512 GMC - Intake Manifold Runner Control Stuck Close - AutoCodes.com — P1512 GMC Code - Intake Manifold Runner Control Stuck Close

What does this mean?

What are the Possible Causes of the DTC P1512 GMC?

Faulty Throttle Body Assembly
Throttle Body Assembly harness is open or shorted
Throttle Body Assembly circuit poor electrical connection

How to Fix the DTC P1512 GMC?

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 P1512 GMC 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.

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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 P1512 GMC Code

1. What are the common symptoms of OBDII code P1512 GMC (Intake Manifold Runner Control Stuck Close)?

The common symptoms include rough idling, loss of power, decreased fuel efficiency, and illuminated Check Engine Light.

2. What causes the Intake Manifold Runner Control to get stuck closed?

The intake manifold runner control can get stuck closed due to carbon buildup, a faulty control solenoid, damaged linkage, or a malfunctioning intake manifold runner control valve.

3. How serious is the P1512 GMC code?

While the vehicle may still be operable with this code, it is important to address it promptly to prevent further damage to the engine and to maintain optimal performance.

4. Can I drive with the Intake Manifold Runner Control stuck closed?

It is not recommended to drive with the intake manifold runner control stuck closed as it can lead to reduced engine performance and potential damage over time.

5. How can I diagnose the cause of the P1512 GMC code?

Diagnosing the cause of this code typically involves inspecting the intake manifold runner control system for any visible damage or blockages, testing the control solenoid, and checking for proper operation of the control valve.

6. What are the possible repair options for fixing the Intake Manifold Runner Control Stuck Close issue?

Repair options may include cleaning out carbon deposits, replacing the control solenoid or valve, repairing or replacing damaged linkage, or resetting the system.

7. Can I reset the P1512 GMC code without fixing the underlying issue?

While clearing the code may temporarily turn off the Check Engine Light, it will not resolve the underlying problem causing the intake manifold runner control to get stuck closed.

8. Will the P1512 GMC code affect emissions tests?

Yes, having this code stored in the vehicle's computer may cause it to fail emissions tests, as it indicates a malfunction in the intake manifold runner control system.

9. How much does it typically cost to repair the Intake Manifold Runner Control issue?

The cost of repairs can vary depending on the specific cause of the problem, but it may range from $100 to $500 or more, including parts and labor.

10. Can regular maintenance help prevent the Intake Manifold Runner Control from getting stuck closed?

Regular maintenance, such as using fuel system cleaners and following recommended service intervals, can help prevent carbon buildup and potential issues with the intake manifold runner control system.