P00AC Ford Code - Intake Air Temperature Sensor 1 Circuit Low Bank 2
Quick Answer
The Intake Air Temperature (IAT) Sensor is a thermistor device in which resistance changes with temperature. Common causes include Faulty Intake Air Temperature Bank 2 Sensor 1 (IAT21), Intake Air Temperature Bank 2 Sensor 1 harness is open or shorted, Intake Air Temperature Bank 2 Sensor 1 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P00AC Ford indicates Intake Air Temperature Sensor 1 Circuit Low Bank 2.
- Common causes
- Common causes include Faulty Intake Air Temperature Bank 2 Sensor 1 (IAT21), Intake Air Temperature Bank 2 Sensor 1 harness is open or shorted, Intake Air Temperature Bank 2 Sensor 1 circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P00AC Ford Description
Thermistor-type sensors are considered passive sensors. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow. The voltage that is dropped across a fixed resistor in a series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.
The IAT sensor provides air temperature information to the PCM. The PCM uses the air temperature information as a correction factor in the calculation of fuel, spark, and airflow.
The IAT sensor provides a quicker temperature change response time than the Engine Coolant Temperature (ECT) or Cylinder Head Temperature (CHT) sensor.
Currently, there are 2 types of IAT sensors used, a stand-alone and an integrated type. Both types function the same, however, the integrated type is incorporated into the Mass Air Flow (MAF) Sensor, the Manifold Absolute Pressure and Temperature (MAPT) Sensor, or the Turbocharger Intake Pressure and Temperature (TCIPT) Sensor instead of being a stand-alone sensor.
The Intake Air Temperature 2 (IAT2) Sensor is typically located near the intake manifold and is used to measure the intake manifold temperature. The PCM uses this information to determine the air charge and provide input for various engine control functions. The IAT2 sensor may be integrated with the Manifold Absolute Pressure (MAP) Sensor.
This Diagnostic Trouble Code (DTC) is set when the Intake Air Temperature Bank 2, Sensor 1 (IAT21) sensor signal is less than the self-test minimum.
What are the Possible Causes of the DTC P00AC Ford?
- Faulty Intake Air Temperature Bank 2 Sensor 1 (IAT21)
- Intake Air Temperature Bank 2 Sensor 1 harness is open or shorted
- Intake Air Temperature Bank 2 Sensor 1 circuit poor electrical connection
How to Fix the DTC P00AC Ford?
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 P00AC Ford 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.
Need more information about the P00AC Ford code?
Need more information on how to fix the P00AC Ford code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P00AC Ford code diagnosed by a professional: Find a repair shop in your area
Information for Specific Ford Models
- P00AC 2015 Ford F150 — Intake Air Temperature Sensor 1 Circuit Low Bank 2
- P00AC 2016 Ford F150 — Intake Air Temperature Sensor 1 Circuit Low Bank 2
- P00AC 2017 Ford F150 — Intake Air Temperature Sensor 1 Circuit Low Bank 2
- P00AC 2018 Ford F150 — Intake Air Temperature Sensor 1 Circuit Low Bank 2
- P00AC 2019 Ford F150 — Intake Air Temperature Sensor 1 Circuit Low Bank 2
- P00AC 2020 Ford F150 — Intake Air Temperature Sensor 1 Circuit Low Bank 2
Frequently Asked Questions about P00AC Ford Code
What does the OBDII code P00AC mean for a Ford vehicle?
Code P00AC indicates an issue with the Intake Air Temperature (IAT) Sensor 1 on Bank 2, specifically a low voltage signal or circuit problem.
What are the common symptoms of code P00AC in a Ford?
Symptoms may include poor engine performance, reduced fuel efficiency, difficulty starting the engine, or the check engine light being illuminated.
What causes the P00AC code to appear in Ford vehicles?
Common causes include a faulty IAT sensor, damaged wiring or connectors, a short in the sensor circuit, or issues with the engine control module (ECM).
How can I diagnose the P00AC code on a Ford?
Start by inspecting the IAT sensor and its wiring for damage or corrosion. Use a multimeter to test for proper voltage and continuity, and check for other related trouble codes.
Can a dirty air filter cause the P00AC code?
While a dirty air filter is not a direct cause, it can restrict airflow and indirectly contribute to intake air temperature issues, so it should be inspected.
Where is the Intake Air Temperature Sensor 1 located in Ford vehicles?
The IAT Sensor 1 is typically located on the intake manifold or integrated into the mass airflow (MAF) sensor, depending on the model.
How do you fix the P00AC code on a Ford?
Repairs may include replacing the faulty IAT sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the ECM if necessary.
Is it safe to drive with the P00AC code on a Ford?
Driving with this code is possible but not recommended, as it can lead to poor performance, increased emissions, and potential damage to other components.
How much does it cost to repair code P00AC on a Ford?
Repair costs vary but typically range from $50 to $200 for parts and labor, depending on whether the IAT sensor or wiring needs replacement.
Can I clear the P00AC code without fixing the issue?
Clearing the code without addressing the root cause may temporarily turn off the check engine light, but the code will likely return until the problem is resolved.
Discuss the causes and fixes for P00AC Ford OBDII Code
Code P00AC Ford comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
