Parts for your 2020 Ford Ranger-Temperature sensors

2020 Ford Ranger Temperature Sensors

Based on technical sources including the Ford Workshop Manual for Ranger PX3 (2019–2021) – covering Engine Cooling, Fuel Charging and Controls, Exhaust Aftertreatment, Climate Control and Automatic Transmission – plus the 2020 Ford Ranger Owner’s Manual, temperature sensors are absolutely fitted and critical on the 2020 Ford Ranger. These include the engine coolant temperature (ECT) sensor, intake/charge air temperature sensors, exhaust gas temperature (EGT) sensors on diesel models with a DPF, the ambient/outside air temperature sensor, and transmission fluid temperature sensing within the transmission control assembly.

On this ute, temperature sensors keep the powertrain happy and efficient. The ECT sensor tells the ECU how warm the engine is so it can manage cold starts, fuelling, ignition timing, and when the radiator fans kick in. Charge air temperature sensors protect the turbos and help the ECU trim boost and fuelling under load. Diesel Rangers rely on multiple EGT sensors to control DPF regeneration and safeguard the turbo and exhaust. The ambient temp sensor feeds the dash reading and helps the HVAC decide when to run the compressor. Transmission fluid temperature informs shift strategy, especially when towing or tackling steep tracks.

They’re not a scheduled replace item, but they do like a bit of attention as part of regular servicing. Good practice includes:

• Scanning live data from cold: ECT and intake temps should be close to ambient before start, then rise smoothly.
• Checking connectors and looms near heat (thermostat housing, intercooler pipes, downpipe/DPF) for brittleness or oil ingress.
• Avoiding oiled air filters that can contaminate intake temp/MAP sensors.

Signs a temp sensor or its wiring’s playing up include hard cold starts, the radiator fan running flat-out, poor fuel economy, lazy A/C, frequent DPF regens or limp mode, and warning lights. Common fault codes you might see are P0115–P0119 (ECT), P0070–P0073 (ambient), and EGT-related codes on diesel models.

Replacement tips: for the ECT, allow the engine to cool, drain enough coolant to drop below the sensor, swap the sensor and seal, then refill and bleed the cooling system. For EGT sensors, soak threads with penetrating oil and torque to spec, heat-cycled ones can seize. Ambient sensors usually unclip from the front bumper/grille area. After any job, clear codes and confirm readings with a scan tool. Sticking with genuine or OE-quality parts keeps the Ranger’s control strategies spot on for our Aussie and Kiwi conditions, whether it’s towing the boat or heading across the High Country.

• Where is the engine coolant temperature sensor on a 2020 Ford Ranger?
  On 2020 diesel Rangers, the ECT sensor is fitted at the coolant outlet/thermostat housing on the cylinder head. On petrol 2.3 EcoBoost models (where applicable), it’s also near the thermostat area on the front of the head. It’s accessible from the top with the engine cover off.
• Do temperature sensors need routine replacement?
  No. They’re monitored by the ECU and are replaced on condition. Many last the life of the vehicle. Inspect wiring and verify readings during services, especially if you tow or see big temperature swings.
• What fault codes point to a bad temperature sensor?
  Typical codes include P0115–P0119 for ECT, P0070–P0073 for the ambient sensor, and EGT/DPF-related codes on diesel models. Always confirm with live data to rule out wiring or connector faults.