The P0887 error code is a common issue for Jeep Cherokee owners, often causing the “Transmission Now” warning light to illuminate and potentially putting the vehicle into limp mode or sticking it in top gear. This code indicates a problem with the Transmission Control Module (TCM) power relay control circuit, specifically a high voltage reading. Unlike some vehicles, the Jeep Cherokee doesn’t have an external relay for this circuit; the relay is integrated into the TCM itself.
There are two primary solutions for the P0887 code in a Jeep Cherokee. Jeep has recognized the prevalence of this issue and issued a service bulletin recommending a software update as the first course of action. This update often resolves the problem by addressing underlying software glitches that affect the TCM’s operation.
If the software update has already been performed or doesn’t resolve the issue, the TCM itself is likely faulty and requires replacement. Replacing the TCM is a more complex procedure that necessitates coding the new module to the vehicle. This process typically requires specialized equipment and expertise, often best handled by a Jeep dealership or a qualified automotive technician with experience in Jeep diagnostics and repairs. Dealerships have access to the proprietary software and tools needed to ensure proper installation and configuration of the new TCM.
Ignoring the P0887 code can lead to more severe transmission problems and potentially leave you stranded. Addressing the issue promptly with either a software update or TCM replacement is crucial to maintain the vehicle’s drivability and prevent further damage. Regular maintenance and timely repairs are essential for keeping your Jeep Cherokee running smoothly. Consult a qualified mechanic or your local Jeep dealership for accurate diagnosis and effective solutions.
