What Does P2008 Mean?
DTC P2008 indicates an open circuit or general electrical fault in the intake manifold runner control (IMRC) circuit for bank 1. The IMRC system uses variable-length intake runners to optimize airflow at different RPM ranges. When the ECM detects an open or high-resistance condition in the IMRC actuator circuit, it sets this code, often resulting in reduced engine performance at certain RPM ranges.
Common Causes
35%
Faulty IMRC solenoid/actuator (open coil winding)
25%
Broken or corroded wiring in the IMRC circuit
20%
Poor electrical connector contact at the IMRC actuator
12%
Failed IMRC control module or relay
8%
ECM driver circuit fault
Diagnostic Steps
1
Read freeze frame data and note engine RPM, load, and temperature conditions when the fault occurred.
2
Visually inspect the IMRC actuator wiring harness and connector on bank 1 for damage, corrosion, or disconnection.
3
Measure resistance across the IMRC solenoid/actuator terminals; compare to manufacturer specification (typically 5-15 ohms).
4
Check for continuity and proper voltage supply in the IMRC circuit wiring from ECM to actuator.
5
Command the IMRC actuator on and off using a scan tool bidirectional control; verify physical runner movement and listen for actuation.
6
If wiring and actuator test good, suspect ECM driver circuit failure and perform pin-level voltage tests at the ECM connector.
Estimated Repair Cost
$80 - $450
Parts + labor, varies by vehicle and location
DTC P2008 indicates an open circuit or general electrical fault in the intake manifold runner control (IMRC) circuit for bank 1. The IMRC system uses variable-length intake runners to optimize airflow at different RPM ranges. When the ECM detects an open or high-resistance condition in the IMRC actu...
The most common cause of P2008 (Intake Manifold Runner Control Circuit/Open Bank 1) is: Faulty IMRC solenoid/actuator (open coil winding)
Typical repair costs for P2008 range from $80 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Generally not a safety concern. May cause reduced power at certain RPM ranges and slightly decreased fuel economy. Vehicle remains drivable.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2008 to identify the root cause.
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Quick Info
Category
Powertrain
System
Intake / Fuel Management
Difficulty
Type
Generic (SAE)
Recommended Tools
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