1. Connect the Ford Integrated Diagnostic System (IDS) service tool or equivalent scan tool, to the data link connector (DLC) and check for DTCs. Is DTC U3003 (low battery voltage) stored in the anti-lock brake (ABS) module, audio front control module (ACM), SYNC module (APIM), global positioning system module (GPSM) and/or P0882, P0700

Diagnostics for Ford Focus. The diagnostics functionalities allows you read out and clear fault codes that are present in your Ford Focus. OBD diagnostics are generic faults related to the engine only (i.e. check engine light). Whereas, manufacturer-level diagnostics are fault codes related to all of the other vehicle systems, such as the A P0128 Ford Focus trouble code is fairly common with the 2.0L engine. It’s defined as: Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature) The engine computer expects the engine to heat up in a predictable manner based on engine coolant temperature and ambient air temperature sensors, engine RPM, engine run time and A defective muffler. Symptoms of code P0420. Here are the most common symptoms of the mechanical and electrical problems related to this DTC: A “rotten egg” smell coming from the exhaust system. High oxygen levels may lead to an increase in sulphur in the fuel system, producing a foul odour. The check engine light comes on.
\n how to check ford focus fault codes
When driving my Focus today, the check engine light came on and the engine started revving loudly whenever the gear would shift (automatic). I later discovered that I cannot reverse the car at all (pressing the gas while in reverse does nothing).
1. Loose ABS Speed Sensor Wiring. Loose or damaged wiring is a very common reason for problems with the ABS system. Minor damage to the speed sensor can cause the ABS system to activate when it doesn’t need to and this can cause the ABS warning light to flash on but not register as a fault with the ECU.

Since about the 2000 model year, Ford has incorporated a handy feature into most of their vehicles, including the Escape. It is a digital self-diagnostics mode that uses the odometer display & instrument cluster to show vehicle information. Insert the key into the ignition switch but don't turn it ( just slide it in ).

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    • how to check ford focus fault codes