The automobile fault code P1538 indicates a problem with the Intake Manifold Runner Control (IMRC) system.
The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light. The cause of this fault code can be a faulty IMRC actuator, an open or shorted IMRC actuator harness, a poor electrical connection in the IMRC actuator circuit, or a faulty Powertrain Control Module (PCM). To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion.
Additionally, look for any broken, bent, pushed out, or corroded connector pins.
The repair time for this issue is estimated to be around 1.0 hour.
Repair Importance Level | 10.0 (Out of 10) |
Estimated Repair Time | Approximately 1.0 hour |
Repair Difficulty Level | 6.67 (Out of 10) |
Unveiling The Mystery: Symptoms Of Fault Code P1538
When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p1538 fault code.
- The symptoms of the automobile fault code p1538 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.
Unraveling The Mystery: What Causes Fault Code P1538?
The automobile fault code p1538 can be caused by a faulty IMRC actuator, open or shorted actuator harness, poor electrical connection in the actuator circuit, or a faulty PCM.
- The fault code P1538 can be caused by a faulty Intake Manifold Runner Control (IMRC) actuator, an open or shorted Intake Manifold Runner Control actuator harness, a poor electrical connection in the Intake Manifold Runner Control actuator circuit, or a faulty Powertrain Control Module (PCM).
Fixing Code P1538: Simple Steps To Resolve The Issue!
To fix the automobile fault code p1538, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.
- To fix the automobile fault code p1538, you need to follow these steps: 1.
- Check the possible causes mentioned above.
- 2.
- Visually inspect the wiring harness and connectors related to the fault code.
- 3.
- Look for any damaged components.
- 4.
- Check for broken, bent, pushed out, or corroded pins in the connectors.
- 5.
- Repairing this fault code is estimated to take approximately 1.0 hour.
Cracking The Code: P1538 – Cost And Complexity Unveiled!
The factors influencing the cost of diagnosing and fixing the automobile fault code p1538 are the estimated repair time of 1.0 hour and the hourly rate charged by auto repair shops, which typically ranges between $75 and $150.
P1538: Understanding The Cause And Solution Of This Fault Code
The P1538 fault code refers to a problem with the Intake Manifold Runner Control (IMRC) system.
This system consists of motorized actuators and linkages that control the opening and closing of butterfly valve plates in the intake manifold. Each bank of the engine has its own IMRC housing, which has two air passages for each cylinder. One passage is always open, while the other is controlled by the butterfly valve plate.
The P1538 code specifically indicates that the IMRC on Bank 2 is stuck open. This means that the butterfly valve plates in the IMRC housing on Bank 2 are not closing properly when commanded to do so by the Powertrain Control Module (PCM). This can lead to issues with the engine’s performance and fuel efficiency.
To fix this issue, the IMRC system on Bank 2 needs to be inspected and repaired.
This may involve checking the motorized actuator, the linkage, and the butterfly valve plates for any mechanical issues or obstructions. It may also require testing the vacuum solenoid and the switches in the actuator for proper functioning. Once the problem is identified, the necessary repairs or replacements can be made to resolve the P1538 fault code and restore the proper operation of the IMRC system on Bank 2.
FAQ
When the engine light is on in a vehicle and the fault code P1538 is displayed, it indicates a problem with the Intake Manifold Runner Control (IMRC) actuator. This could be due to a faulty actuator, an open or shorted actuator harness, a poor electrical connection in the actuator circuit, or a faulty Powertrain Control Module (PCM). To fix this issue, it is recommended to visually inspect the wiring harness and connectors, check for any damaged components, and look for any broken, bent, pushed out, or corroded connector pins.
If you’re seeing the P1538 fault code with the engine light on, it could be due to a few possible causes. One culprit could be a faulty Intake Manifold Runner Control (IMRC) actuator. Another possibility is that the IMRC actuator harness is open or shorted, or there could be a poor electrical connection in the IMRC actuator circuit. Lastly, a faulty Powertrain Control Module (PCM) could also be to blame. To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.
If you’re experiencing the P1538 fault code in your vehicle, with the engine light or service engine soon warning light on, there are a few steps you can take to fix it. First, check for a faulty Intake Manifold Runner Control (IMRC) actuator or a problem with the actuator harness. Inspect the wiring harness and connectors for any damage or poor electrical connections. Look for broken, bent, pushed out, or corroded pins on the connectors. By visually inspecting and addressing these possible causes, you can resolve the P1538 fault code.

Wrap Up
If your engine light is on and you’re dealing with a P1538 fault code, it’s likely due to a faulty Intake Manifold Runner Control (IMRC) actuator or an issue with the actuator’s wiring harness.
To fix this, visually inspect the wiring harness and connectors for any damage. Look out for broken, bent, pushed out, or corroded connector pins. Don’t forget to check the Powertrain Control Module (PCM) as well.