DTC Code B1448 – What does this code mean?

<ul> <li><a href="/problems/engine-warning-light-on"><b>Engine Light ON</b></a>: The engine light or service engine soon warning light illuminates, indicating a potential issue with the wiper park sense circuit.</li> <li><b>Wipers Not Parking Correctly</b>: Wipers may not return to their correct resting position, which could be linked to a short in the wiper park sense circuit.</li> <li><a href="/problems/wiper-motor-intermittently-not-working"><b>Wipers Operating Erratically</b></a>: Wipers might operate intermittently or at incorrect speeds, potentially due to a short to battery in the circuit.</li> </ul>

<ul><li>The wiper park sense may be faulty, causing incorrect signals to be sent to the system.</li><li>An open or shorted harness in the wiper park sense can disrupt the electrical flow, leading to this error code.</li><li>Poor electrical connections in the wiper park sense circuit can result in intermittent or failed communication.</li><li>A malfunctioning Body Control Module (BCM) can misinterpret or fail to process the signals from the wiper park sense circuit.</li></ul>

<ul> <li><b>Initial Inspection</b>: Inspect the wiper park sense circuit for any visible damage or corrosion. Check the wiring harness and connectors for signs of wear or damage.</li> <li><b>Check Battery Voltage</b>: Measure the battery voltage to ensure it is within the normal range. A high voltage could indicate a short to the battery.</li> <li><b>Test Wiper Motor</b>: Disconnect the wiper motor and test it separately to ensure it is functioning correctly. A faulty motor could cause a short circuit.</li> <li><b>Inspect Relay and Fuse</b>: Check the wiper relay and fuse for any signs of damage or malfunction. Replace if necessary.</li> <li><b>Check Ground Connections</b>: Ensure all ground connections related to the wiper system are secure and free of corrosion. Poor grounding can lead to electrical issues.</li> <li><b>Perform Circuit Continuity Test</b>: Use a multimeter to perform a continuity test on the wiper park sense circuit to identify any shorts or open circuits.</li> <li><b>Review Control Module</b>: If all other components are functioning correctly, inspect the control module for faults. Reprogram or replace if necessary.</li></ul>

<p>The DTC B1448 indicates a <b>Wiper Park Sense Circuit Short To Battery</b>. This is a <b>critical</b> issue as it can lead to continuous wiper operation, even when not needed, potentially distracting the driver and impairing visibility. <ul><li>Immediate attention is required to prevent further electrical issues or potential damage to the wiper motor.</li></ul> Delayed repair could compromise safety, especially in adverse weather conditions.</p>