What Does P00AE Mean?
The PCM has detected intermittent or erratic voltage signals from the intake air temperature sensor 1 on bank 2. The sensor readings are unstable, fluctuating unpredictably, or periodically dropping out. This makes it impossible for the PCM to reliably use the data for fuel and timing calculations. The check engine light may come on intermittently, and the driver may notice occasional brief hesitations or rough running.
Common Causes
35%
Loose or corroded connector pins at the IAT sensor 1 bank 2 connector
25%
Partially broken or chafed wire creating intermittent contact
20%
Internally failing IAT sensor 1 with erratic resistance element
15%
Vibration-related connector separation at the sensor or PCM
5%
Electromagnetic interference from nearby electrical components
Diagnostic Steps
1
Monitor the IAT sensor 1 bank 2 PID live while wiggling the connector and harness — any sudden jumps, dropouts, or spikes pinpoint the intermittent location.
2
Inspect the sensor connector for corrosion, spread terminals, or moisture — clean with contact cleaner and re-tension female terminals with a pick tool.
3
Use a lab scope on the signal circuit to capture intermittent glitches and noise that a DVOM might miss during momentary contact loss.
4
Tap the sensor body while monitoring resistance to check for an internally erratic thermistor element — resistance should remain stable.
5
Inspect the entire harness run for areas where vibration could cause chafing: near engine mounts, through firewalls, or along brackets.
Estimated Repair Cost
$40 - $250
Parts + labor, varies by vehicle and location
The PCM has detected intermittent or erratic voltage signals from the intake air temperature sensor 1 on bank 2. The sensor readings are unstable, fluctuating unpredictably, or periodically dropping out. This makes it impossible for the PCM to reliably use the data for fuel and timing calculations. ...
The most common cause of P00AE (Intake Air Temperature Sensor 1 Circuit Intermittent/Erratic Bank 2) is: Loose or corroded connector pins at the IAT sensor 1 bank 2 connector
Typical repair costs for P00AE range from $40 to $250, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Safe to drive. Intermittent temperature data may cause minor, brief drivability hiccups but no significant safety risk. Repair when convenient for consistent engine performance.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P00AE to identify the root cause.
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Quick Info
Category
Powertrain
System
Intake Air System
Difficulty
Type
Generic (SAE)
Recommended Tools
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