IMRC Malfunction - Stuck Closed (Bank 2) (Ford)
What does P1532 mean?
The P1532 code means the vehicle's onboard diagnostic system has detected: IMRC Malfunction - Stuck Closed (Bank 2) (Ford). This is a moderate severity code.
Common Symptoms
- Reduced high-RPM power on one bank
- Check Engine Light illuminated
- Engine feels restricted during hard acceleration
- Slightly uneven power delivery
- Minor decrease in fuel economy
Probable Causes (Ranked by Likelihood)
- Carbon deposits on bank 2 IMRC plates Very High
- Failed bank 2 IMRC actuator High
- Broken linkage on bank 2 Moderate
- Seized pivot shaft on bank 2 Moderate
- PCM signal not reaching bank 2 actuator Low
Step-by-Step Diagnostic Procedure
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Inspect the bank 2 IMRC plates for carbon buildup or binding.
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Command the IMRC system with a scan tool and check bank 2 plate movement.
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Test the bank 2 actuator by applying voltage directly.
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Check the linkage between the actuator and plates for damage.
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Verify the PCM signal reaches the bank 2 actuator connector.
Frequently Asked Questions
What is bank 2 on a Ford V8?
Bank 2 is the side of the engine opposite cylinder 1. On Ford modular V8 engines, bank 2 is typically the driver side of the engine.
Should I service both banks at the same time?
Yes. If one bank has carbon buildup, the other likely does too. Cleaning or servicing both banks at the same time saves labor and prevents the other side from failing shortly after.
How does this differ from P1469?
P1469 indicates IMRC stuck open on bank 2, while P1532 indicates stuck closed. Stuck open affects low-RPM torque, while stuck closed affects high-RPM power.