What Does P0665 Mean?
The PCM has detected a high voltage condition in the intake manifold tuning valve (IMTV) control circuit for bank 2. This indicates an open circuit or loss of ground in the bank 2 IMTV system, causing voltage to remain higher than the expected range. The intake runner length cannot be varied, reducing volumetric efficiency on bank 2. The driver may notice uneven power between RPM ranges and slightly reduced fuel economy.
Common Causes
35%
Open circuit in bank 2 IMTV control wiring
30%
Failed bank 2 IMTV solenoid with open coil
20%
Disconnected or corroded connector at bank 2 IMTV
10%
Broken ground wire to bank 2 IMTV solenoid
5%
PCM driver circuit open fault
Diagnostic Steps
1
Check for related bank 1 codes (P0661/P0662). If only bank 2 is affected, the fault is localized to the bank 2 circuit.
2
Disconnect the bank 2 IMTV solenoid and measure coil resistance. An infinite (OL) reading confirms the solenoid coil is open and the solenoid must be replaced.
3
Verify battery voltage is present on the power feed wire at the solenoid connector with key on. If absent, check the related fuse and trace the feed wire for opens.
4
Perform a continuity check on the ground wire from the solenoid connector back to the PCM driver pin. Repair any open circuit found.
5
If all external circuits check good, command the IMTV via bidirectional scan tool control while monitoring PCM output voltage to verify PCM driver operation.
Estimated Repair Cost
$75 - $450
Parts + labor, varies by vehicle and location
The PCM has detected a high voltage condition in the intake manifold tuning valve (IMTV) control circuit for bank 2. This indicates an open circuit or loss of ground in the bank 2 IMTV system, causing voltage to remain higher than the expected range. The intake runner length cannot be varied, reduci...
The most common cause of P0665 (Intake Manifold Tuning Valve Control Circuit High (Bank 2)) is: Open circuit in bank 2 IMTV control wiring
Typical repair costs for P0665 range from $75 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to continue driving. Performance impact is limited to reduced mid-range torque on bank 2 and minor fuel economy loss. No safety risk, but the code should be addressed within a few weeks to maintain engine efficiency.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0665 to identify the root cause.
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Quick Info
Category
Powertrain
System
Intake / Air Management
Difficulty
Type
Generic (SAE)
Recommended Tools
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