2006 F-150 Remote Starter Installation Causes P0104, P0605, and B1352 Fault Codes - Expert Diagnosis Required
I installed a Viper 7345V remote starter in my 2006 Ford F-150 on February 10, 2016. On February 11, the check engine light activated. I returned to the installer, who stated it was not related to their work. I then visited an auto repair shop, which diagnosed three fault codes: P0104 (Mass Airflow Sensor Circuit Malfunction), P0605 (Internal Control Module ROM Error/Interference from Non-OEM Electronic Device), and B1352 (Powertrain Control Module Communication Issue). The shop replaced the Mass Airflow Sensor and cleared the codes. However, on February 15, 2016, the check engine light returned. A follow-up scan revealed P0605 — indicating an internal error in the control module due to interference from a non-OEM electronic device. The remote starter installer claims their installation did not cause any issues and refuses to inspect their work for potential problems such as frayed wiring or defective components. I am now wondering whether there are additional diagnostic steps I should have taken before pursuing further investigation with the remote starter installer, especially given that P0605 is a critical fault related to the vehicle's electronic control module.
Remote starters can interfere with a vehicle's onboard electronics. The pattern here — no issues before installation, problems after — strongly suggests an electronic conflict. A practical solution: have the remote starter removed and test if symptoms resolve. This helps isolate whether the device is causing the fault codes.