P00AE — Intake Air Temperature Sensor 1 Circuit Intermittent/Erratic Bank 2

powertrain (engine/transmission)

Is it safe to drive?

Repair promptly if P00AE is active The vehicle can usually be driven cautiously to a repair shop if the engine runs steadily, but an erratic Bank 2 IAT 1 signal can cause incorrect fueling, rough idle, hesitation, or stalling. Avoid continued driving if P00AE is accompanied by severe misfire, power loss, or repeated stalling.

Typical symptoms

The check-engine light may illuminate with P00AE stored in the powertrain control module.
The engine may idle roughly, hesitate, surge, or occasionally stall as the ECU receives an unstable intake-air temperature signal.
Short-term fuel-trim readings may move unexpectedly, and fuel economy may vary from one drive to another.
An OBD2 scan tool may show the Bank 2 IAT 1 value jumping abruptly without a corresponding change in engine or ambient temperature.
P00AE may appear intermittently after the engine warms, vibrates, or reaches a specific operating condition.

Common causes

A loose, corroded, or thermally sensitive connector terminal at the Bank 2 Intake Air Temperature Sensor 1 causes an intermittent signal.
Chafed wiring, a cracked connector housing, or a broken wire in the sensor harness creates an open circuit only when the harness moves.
The Bank 2 IAT 1 sensor has an internal intermittent failure that produces sudden temperature-signal jumps.
A poor sensor ground, damaged power feed, or unstable circuit reference can make P00AE appear while the connector and wiring look intact.
Moisture intrusion into the IAT 1 connector can corrode the terminals and cause erratic readings.
A less common ECU-side terminal or internal circuit fault can create the same intermittent Bank 2 signal recognized as P00AE.

How to diagnose with an OBD scanner

Confirm and monitor P00AE Connect an OBD2 scanner such as ELM327 with AIScanAuto, read stored and pending codes, and confirm P00AE. Monitor the IAT 1 live-data value while noting any sudden jumps, drops, or spikes. If bank-specific data is unavailable, compare the labeled IAT channel with the physical Bank 2 sensor location.
Inspect the IAT 1 connector and harness Locate the Bank 2 Intake Air Temperature Sensor 1 connector in the intake duct or adjacent harness. Disconnect it carefully and inspect the terminals and housing for looseness, green corrosion, water traces, heat damage, and pushed-back pins. Check the harness where it rubs against brackets or moving components.
Perform a wiggle test Reconnect the sensor and watch the IAT 1 value on the scan tool while gently moving the connector, sensor body, and nearby harness. A rapid voltage or temperature-value change during the wiggle test strongly points to a terminal, wiring, or sensor fault associated with P00AE.
Check the circuit electrically Use the vehicle wiring diagram to identify the sensor pins and permitted reference, ground, and signal values. With the ignition on, compare sensor-circuit voltage with the specified values while flexing the harness. Check for an intermittent open, short to ground, short to power, or unstable ground before condemning the sensor.
Repair and validate the fault Repair the damaged wire, clean and secure the terminals, replace the connector or Bank 2 IAT 1 sensor as testing indicates, and apply the appropriate connector seal. Clear P00AE, road-test the vehicle, and confirm that the IAT 1 value changes smoothly and that the code does not return.

Approximate repair cost

A typical independent-shop estimate for diagnosing and repairing P00AE is $180-$450, depending on whether the fault is a sensor, connector, or wiring repair. Labor and part prices vary by region, and these figures are estimates rather than quoted prices.

Common questions

What does P00AE specifically identify?

P00AE identifies an intermittent or erratic electrical signal from Intake Air Temperature Sensor 1 on Bank 2, preventing the ECU from receiving a stable intake-temperature input.

Can the vehicle be driven with P00AE?

Yes, cautiously, if the engine runs normally and there is no severe misfire or stalling. Because P00AE can disturb fuel calculation, it should be diagnosed before long or high-load driving.

What is the most common cause of P00AE?

The most common causes are an intermittently loose or corroded IAT 1 connector, damaged wiring near the harness, or an internally intermittent Bank 2 temperature sensor.

How can a technician verify that P00AE is repaired?

After repair, clear the code, road-test the vehicle, and monitor the IAT 1 value. The reading should change smoothly with temperature, and P00AE should not return as a pending or permanent code.

P00AE is an OBD2 diagnostic trouble code that points to a fault in the engine's air intake system, specifically involving the intake air temperature sensor on bank 2. When your vehicle's control module detects erratic or intermittent signal behavior from this sensor circuit, it logs P00AE and triggers the Check Engine Light. The code falls within the powertrain category, meaning it directly affects how the engine manages air-fuel mixture and throttle operation.

Understanding bank and sensor numbering is essential before tackling P00AE. Bank 2 refers to the engine cylinder bank that does not contain cylinder 1, while sensor 1 indicates the upstream sensor positioned before the catalytic converter. Mixing these up is a common mistake that leads to unnecessary parts replacement. Always verify the actual sensor location on your specific vehicle before proceeding with any repairs.

The engine control unit continuously monitors the intake air temperature circuit during normal driving. When the sensor voltage or resistance fluctuates outside the manufacturer's expected parameters for a set number of drive cycles, the module interprets this as a circuit malfunction and stores P00AE. The freeze frame data captured alongside the code provides a snapshot of engine conditions at the moment of failure, including RPM, load percentage, coolant temperature, and vehicle speed. This information is invaluable during diagnosis because it tells you exactly what conditions caused the fault to appear.

Common Symptoms of P00AE

When P00AE is active, you may notice one or more of the following issues while driving:

Delayed or sluggish throttle response when pressing the accelerator
Engine entering limp-home mode with noticeably reduced power output
Unstable idle that fluctuates or runs higher than normal
Engine stalling as you decelerate or come to a stop
Check Engine Light illuminated on the dashboard

These symptoms occur because the ECU cannot accurately measure incoming air temperature, causing it to make incorrect adjustments to fuel delivery and throttle positioning.

What Causes P00AE?

Several conditions can trigger P00AE. The most frequent culprits include:

Electronic throttle motor failure or degradation
Air leaks in the intake system downstream of the mass airflow sensor
Carbon buildup on the throttle body preventing smooth plate movement
Contaminated or malfunctioning MAF or MAP sensor

Wiring issues such as damaged harnesses, corroded connectors, or loose electrical contacts can also produce the same code. Identifying the root cause requires systematic testing rather than guessing.

How to Diagnose P00AE

Follow these practical steps to isolate the source of P00AE:

Connect an OBD2 scanner and confirm P00AE is stored in the ECU. Record the freeze frame data, which shows RPM, load, temperature, and speed at the moment the fault occurred.
Check for any related diagnostic trouble codes. Secondary codes often point to the actual failing component rather than the circuit symptom alone.
Inspect all wiring and connectors associated with the throttle body and intake air temperature circuit. Look for chafed insulation, corrosion, broken pins, or loose plugs.
Remove the throttle body and physically clean it with appropriate throttle cleaner. Verify the throttle plate moves freely through its entire range without binding.
Monitor live data for throttle position and MAF/MAP sensor readings while operating the accelerator pedal. Values should change smoothly and responsively.
Clear P00AE after cleaning or repairs, then drive the vehicle through a complete drive cycle that recreates the freeze frame conditions. If the code does not reappear, the issue is resolved.

Repair Options and Costs

Repair costs for P00AE vary depending on which component actually failed. Here are typical scenarios at independent shop rates:

Throttle body cleaning: $80–$200
Throttle body assembly replacement: $250–$700
MAF or MAP sensor replacement: $150–$400

Parts and labor are included in these figures. The overall cost to resolve P00AE typically falls between $80 and $700, with the specific amount determined by whether cleaning solves the problem or component replacement becomes necessary.

Driving Safety Verdict

Drive with caution when P00AE is present. Many throttle-related faults force the engine into limp-home mode, which significantly reduces available power. This reduced-power state is acceptable for driving to a repair facility but is not suitable for extended highway travel. If your vehicle stalls unexpectedly or the accelerator pedal becomes unresponsive, stop driving immediately and arrange for towing rather than risking a dangerous loss of power in traffic.