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by Bob O’Neill and Bob Lincoln
This is detected when the ECU doesn’t sense near 0vdc or 12vdc at the relay when the solenoid is turned on or off. When code 37 is thrown the power limited light will not be lit and the system will not enter limp mode.
Poor wiring or connection - Read the page ‘How to troubleshoot drivability issues’. Check the wiring and connections from the logic module to the solenoid. Clean and re-grease the connectors with dielectric grease.
Defective solenoid - The solenoid is located in the right, front fender next to one to three other solenoids. See the Understanding Solenoids page for information about how to test and repair solenoids.
Sometimes, a code 37 will be stored on manual-transmission cars, and the Upshift indicator lamp will light, even in 5th gear. This is a random fault in the ECU, apparently harmless, and can be ignored.
Sensors, Switches, and Other Systems | Main Repairs Page | EEKs
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