Ford Codes List

Ford-enhanced trouble code lookup
for Ford, Lincoln and Mercury.

Repair Order

655 Ford-enhanced codes on file

Code
P1538

Intake Manifold Runner Control Stuck Open Bank 2

Category
Powertrain - Computer and Auxiliary Controls
Severity
Check Engine Light
Applies to
Mustang, Taurus SHO with banked IMRC
Related
No single generic twin. See OBD Codes List

Findings, check these first

  • Carbon holding bank 2 runners open
  • Broken bank 2 return linkage
  • Failed bank 2 actuator
  • Faulty bank 2 position sensor
  • Vacuum fault on bank 2

Standard procedure

  1. Confirm bank 2 flap position by hand
  2. Inspect bank 2 linkage and spring
  3. Clean carbon from runners
  4. Test the bank 2 position sensor
  5. Replace the actuator or sensor per findings

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Sources and review

Review: checked against the recorded source material.

Last updated 2026-09-06.

Report a correction for P1538. Include your vehicle, the issue and a source if you have one.

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