What Does P1537 Mean?
The PCM has detected that the intake manifold runner control valve on Bank 1 is stuck in the open position. This valve should modulate to optimize engine breathing across different RPM ranges.
Common Causes
35%
Carbon buildup or debris preventing runner valve from closing
25%
Failed intake manifold runner control actuator motor
20%
Broken or disconnected linkage or cable to runner valve
12%
Failed runner position sensor providing incorrect feedback
8%
Vacuum leak or failed vacuum actuator (if vacuum-operated)
Diagnostic Steps
1
Step 1: Locate intake manifold runner control valve/actuator on Bank 1 and visually inspect linkage for disconnection or damage
2
Step 2: Command actuator operation using scan tool bi-directional controls and observe valve movement; listen for motor operation
3
Step 3: Remove actuator or valve assembly and inspect for carbon buildup, broken components, or mechanical binding
4
Step 4: Check runner position sensor voltage with scan tool and manually move valve to verify sensor tracks movement correctly
5
Step 5: If vacuum-actuated system, check for vacuum supply, leaks, and proper solenoid operation
Estimated Repair Cost
$200 - $800
Parts + labor, varies by vehicle and location
The PCM has detected that the intake manifold runner control valve on Bank 1 is stuck in the open position. This valve should modulate to optimize engine breathing across different RPM ranges.
The most common cause of P1537 (Intake Manifold Runner Control (Bank 1) Stuck Open) is: Carbon buildup or debris preventing runner valve from closing
Typical repair costs for P1537 range from $200 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle is safe to drive. May experience reduced low-end torque, slight performance loss, and minor fuel economy reduction.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1537 to identify the root cause.
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Quick Info
Category
Powertrain
System
Intake Air System
Difficulty
Type
Manufacturer
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