P1436 2007 Ford Fusion Code - A/C Evaporator Air Temperature Circuit Low
Quick Answer
The A/C Evaporator Temperature (ACET) sensor contains a thermistor which receives a reference voltage from the Powertrain Control Module (PCM). Common causes include Faulty A/C Evaporator Temperature (ACET) Sensor, A/C Evaporator Temperature Sensor harness is open or shorted, A/C Evaporator Temperature Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- P1436 2007 Ford Fusion indicates A/C Evaporator Air Temperature Circuit Low.
- Common causes
- Common causes include Faulty A/C Evaporator Temperature (ACET) Sensor, A/C Evaporator Temperature Sensor harness is open or shorted, A/C Evaporator Temperature Sensor circuit poor electrical connection.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code P1436 2007 Ford Fusion Description
The PCM maintains evaporator core temperature and prevents icing of the evaporator core, by disengaging the A/C compressor clutch (non-hybrid) or decreasing the electric A/C compressor speed (hybrid) when the evaporator A/C Evaporator Temperature sensor reading falls below acceptable levels, and by engaging the A/C compressor clutch (non-hybrid) or increasing the electric A/C compressor speed (hybrid) when the discharge air temperature rises above acceptable levels.
The A/C Evaporator Temperature sensor is located inside of the heater core and evaporator core housing in the air-stream leaving the evaporator core.
The Diagnostic Trouble Code (DTC) Indicates the ACET signal input is less than Self-Test minimum. The Self-Test minimum is 0.13 volts.
What are the Possible Causes of the DTC P1436 2007 Ford Fusion?
- Faulty A/C Evaporator Temperature (ACET) Sensor
- A/C Evaporator Temperature Sensor harness is open or shorted
- A/C Evaporator Temperature Sensor circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P1436 2007 Ford Fusion?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1436 2007 Ford Fusion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1436 2007 Ford Fusion Code
1. What does OBDII code P1436 mean for a 2007 Ford Fusion?
Code P1436 indicates an issue with the A/C evaporator air temperature sensor, specifically that the sensor is reading a voltage lower than expected.
2. What are the common symptoms of code P1436 in a 2007 Ford Fusion?
Symptoms may include reduced cooling performance, erratic air conditioning operation, or the A/C system not functioning properly.
3. What causes the P1436 code to appear?
Common causes include a faulty A/C evaporator air temperature sensor, damaged wiring or connectors, or issues within the vehicle's climate control module.
4. Can I drive with the P1436 code on my 2007 Ford Fusion?
Yes, you can typically drive with this code, but the A/C system may not function properly, which could affect comfort during hot weather.
5. How do I diagnose the P1436 code on my Ford Fusion?
Start by checking the A/C evaporator air temperature sensor and its wiring for damage, corrosion, or loose connections. Use a multimeter to test the sensor's voltage and resistance.
6. How do I fix the P1436 code on a 2007 Ford Fusion?
Repairs may include replacing the A/C evaporator air temperature sensor, repairing damaged wiring, or cleaning corroded connectors. If the sensor and wiring are fine, reprogramming or replacing the climate control module may be necessary.
7. Where is the A/C evaporator air temperature sensor located on a 2007 Ford Fusion?
The sensor is typically located near the evaporator core inside the vehicle's HVAC system, often behind the dashboard.
8. How much does it cost to fix the P1436 code on a Ford Fusion?
The cost can vary depending on the issue, but replacing the A/C evaporator air temperature sensor typically costs between $100 and $300, including parts and labor.
9. Can a faulty A/C evaporator air temperature sensor damage other parts of the car?
While unlikely to cause direct damage, a faulty sensor can lead to inefficient A/C operation, which may strain other A/C components over time.
10. Do I need a professional mechanic to fix the P1436 code on my 2007 Ford Fusion?
If you're comfortable working with automotive electrical components, you may be able to fix it yourself. However, for advanced diagnostics or module reprogramming, a professional mechanic is recommended.
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