ECM fault code 168-1 indicates low battery voltage to the Engine Control Module, causing shutdown and electrical failures. This comprehensive guide covers diagnosis, repair steps, and prevention for diesel RV owners experiencing this critical issue.
Troubleshoot complete 12 volt power loss in RV. Step-by-step guide covering batteries, fuses, disconnect switches, and wiring.
Master your RV electrical system from house batteries to shore power. Covers 12V DC, 120V AC, inverters, and charging.
Troubleshoot house batteries dying while on 50 amp shore power. Diagnose converter, breakers, and connections to restore proper charging.
Your chassis A/C cycling above 2800 RPM is likely caused by high head pressure from insufficient airflow at highway speeds, low refrigerant despite proper charge, or the PCM cutting A/C during high load conditions - this is normal protective behavior on Ford V10 engines.
Emergency start connects house batteries to chassis battery. If not working: verify house batteries are truly charged under load, listen for solenoid click when pressing button, check fuses, and verify correct activation procedure. Solenoid failure is common.
External generators need signal wire to trigger ATS, which is only connected to onboard genset. Solutions include manual bypass switch, simulating the run signal, or universal voltage-sensing ATS.
Rear brake lights and hazards out often common ground or connector issue. Check grounds at rear lights and chassis-coach junction.
The ignition relay on a 1988 Ford E350 (Fleetwood Tioga base) is typically located in the engine bay fuse/relay box on the driver's side firewall, or in a separate relay box near the battery. Some models may have it mounted on the firewall or inner fender well.
The ultimate guide to Ford F53 chassis ownership covering everything from routine maintenance to advanced troubleshooting. Learn about common issues, upgrade options, and keep your motorhome running reliably.
Keep your RV slide-outs working reliably with this comprehensive maintenance and repair guide.
You can replace a failed Atwood Levelegs control system with a GAMA Electronics RF340-4PR-ASL controller for around $235, which is much cheaper than OEM replacement or repair. This aftermarket solution provides better reliability and easier troubleshooting than the original Atwood system.
All headlights out with other lights working points to headlight relay or combination switch failure. Check and swap headlight relay first - if no change, the combination switch is likely failed. Common issue on late 90s Ford chassis.
Surge Guard 40250-RVC and 40350-RVC are interchangeable. Buzzing usually means loose connections - tighten all terminals. If buzzing persists with tight connections, the relay may be failing and unit needs replacement.
1990 Tioga E-350 no start - check battery, fuel pump operation, spark in that order. Listen for fuel pump hum with key on. Check inertia switch reset button. Common failures are fuel pump relay and ignition module.