Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble with a part that helps control how much air goes into the engine. It's like if you had a toy that wasn't opening and closing properly.
The P1516 code indicates a problem with the Intake Manifold Runner Control (IMRC) system on Bank 1 of the engine. The IMRC system helps control airflow to the engine's cylinders.
The Intake Manifold Runner Control (IMRC) system is designed to optimize airflow into the engine's intake manifold. The P1516 code is triggered when the Engine Control Module (ECM) detects an input error from the IMRC system on Bank 1, which can affect engine performance and efficiency.
• Check Engine Light illuminated
• Poor engine performance
• Reduced fuel efficiency
• Engine hesitation or misfiring
• Faulty IMRC actuator
• Wiring issues in the IMRC circuit
• Faulty IMRC position sensor
• Mechanical failure in the intake manifold
IMRC: Intake Manifold Runner Control
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the IMRC actuator and wiring for damage.
• Test the IMRC position sensor for proper operation.
• Check for mechanical obstructions in the intake manifold.
• Replace the faulty IMRC actuator.
• Repair or replace damaged wiring in the IMRC circuit.
• Replace the IMRC position sensor if faulty.
• Clear any obstructions in the intake manifold.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• GMC Sierra
• Regular maintenance of the intake system
• Ensure proper engine tuning
• Inspect wiring and connectors periodically
Engine Performance
• Avoid driving aggressively until the issue is fixed.
• Get the vehicle inspected by a professional mechanic.
Check if the vehicle's warranty covers engine management system repairs.
The P1516 code has been commonly reported in vehicles with older IMRC systems, especially in models from the early 2000s.
Moderate – Addressing this issue can improve engine performance and fuel efficiency.
Driving with a malfunctioning IMRC system can lead to increased emissions and reduced vehicle performance.
• Engine at operating temperature
• Vehicle in park or neutral
The IMRC actuator is typically located on the intake manifold, which is on top of the engine.
Q: Can I drive with a P1516 code?
A: While you can drive with this code, it's best to fix it soon to avoid engine performance issues.
Q: What happens if I ignore the P1516 code?
A: Ignoring the code can lead to poor engine performance and reduced fuel efficiency.
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