Parts for your 2015 Honda Cr-v-Temperature sensors

Temperature sensors on the 2015 Honda CR‑V

Temperature-sensors are absolutely used on the 2015 Honda CR‑V. Honda’s 2015 CR‑V Service Manual (engine controls, cooling, HVAC and CVT sections), the Owner’s Manual, and standard OBD‑II documentation (SAE J1979) all show multiple temperature inputs on this model, including engine coolant temperature (ECT), intake air temperature (IAT), ambient/outside air temperature, transmission fluid temperature (CVT), and an A/C evaporator temperature sensor. Industry repair databases (e.g., Mitchell1/ALLDATA) list diagnosis and replacement procedures for these sensors on the 2015 CR‑V as well.

On this CR‑V, temperature-sensors do the quiet heavy lifting that keeps things running sweet. The ECT sensor tells the engine computer how hot the motor is so it can sort fuelling, ignition timing and cold starts, and switch the radiator fans. The IAT sensor helps trim fueling by tracking the air’s density coming into the intake. The ambient sensor feeds the climate control and the dash display, and it also influences A/C compressor logic. In CVT models, a transmission fluid temperature sensor protects the gearbox and guides shift strategy. The evaporator sensor prevents the A/C core from icing up.

While these sensors aren’t typically “service items”, they benefit from a bit of attention during routine servicing:

• Scan for fault codes and live data. On a cold engine, ECT and IAT should sit close to outside temperature. Odd readings or codes like P0117/P0118 (ECT), P0113 (IAT), P0072/P0073 (ambient) or P0711 (ATF temp) point to trouble.
• Keep the cooling system healthy. Use Honda Type 2 long‑life coolant and follow the Owner’s Manual intervals. Contaminated or low coolant can upset the ECT sensor’s accuracy.
• Inspect connectors and loom routing under the bonnet. Brittle plugs, damaged wiring near the thermostat housing or front bumper (ambient sensor) are common culprits.

Replacement tips for the 2015 CR‑V:

• Use genuine or high‑quality aftermarket sensors matched to the VIN. Cheap copies can skew readings.
• For ECT replacement, allow the engine to cool, drain enough coolant to drop the level below the sensor, and refill/bleed properly to avoid air pockets. Don’t use thread tape if the sensor uses an O‑ring seat.
• Ambient sensors sit near the front bumper/condenser and are easy to damage in minor knocks—verify mounting and airflow path.
• After any sensor swap, clear codes, perform a proper warm‑up, and recheck live data.

Tell‑tale symptoms that a CR‑V temperature-sensor may be on the fritz include hard cold starts, rough idle, poor fuel economy, fans running constantly, an incorrect outside temperature display, or A/C that won’t behave. A quick scan and a few basic checks usually sort the diagnosis.

• Where is the engine coolant temperature (ECT) sensor on a 2015 CR‑V?
  It’s mounted near the thermostat housing on the engine, close to the upper radiator hose. Access is from the top of the engine bay, expect to drain some coolant before removal and bleed the system on refit.
• Can a bad temperature-sensor stop the A/C or make the fans run all the time?
  Yes. If the ECT or ambient sensor sends implausible data, the ECU/BCM may default to fail‑safe, triggering continuous fan operation or inhibiting A/C. Checking live data and codes will pinpoint which sensor is playing up.
• Do temperature-sensors need periodic replacement?
  Not as a routine item. They’re replaced on condition—when testing shows they’re out of spec or fault codes appear. Keeping coolant fresh and connectors clean helps them last the distance.