What Does P007E Mean?
This code indicates the charge air cooler temperature sensor signal on bank 1 is exhibiting intermittent or erratic behavior, with the voltage fluctuating unexpectedly. The ECM has detected signal dropouts, spikes, or rapid changes that do not correspond to actual temperature changes. This typically points to a loose connection or degraded wiring rather than a complete circuit failure.
Common Causes
35%
Loose or worn connector at the CAC temperature sensor with intermittent contact due to vibration
25%
Intermittent break in the sensor wiring harness, often at a stress point or flexion area near the intercooler piping
20%
Degrading CAC temperature sensor with a cracked thermistor element that changes resistance with vibration or thermal cycling
10%
Electromagnetic interference from aftermarket ignition components or poorly routed wiring near high-current circuits
10%
Corroded ECM connector pin for the CAC sensor input creating intermittent signal loss
Diagnostic Steps
1
While monitoring the CAC temperature sensor voltage on a scan tool or oscilloscope, wiggle the sensor connector and harness at various points. A sudden voltage change during manipulation pinpoints the intermittent connection location.
2
Inspect the sensor connector for loose terminal fit by performing a gentle tug test on each wire. Check for corroded, spread, or damaged pin contacts.
3
Examine the wiring harness routing for stress points, sharp bends, or locations where vibration could cause wire fatigue. Pay attention to where the harness attaches to the intercooler piping.
4
Use an oscilloscope to monitor the sensor signal for noise or dropouts that may not appear on a standard scan tool data stream. Look for voltage spikes above 5V or drops below 0V.
5
If the wiring is sound, replace the sensor as the internal thermistor may have a micro-crack causing resistance changes under vibration or temperature cycling.
Estimated Repair Cost
$40 - $300
Parts + labor, varies by vehicle and location
This code indicates the charge air cooler temperature sensor signal on bank 1 is exhibiting intermittent or erratic behavior, with the voltage fluctuating unexpectedly. The ECM has detected signal dropouts, spikes, or rapid changes that do not correspond to actual temperature changes. This typically...
The most common cause of P007E (Charge Air Cooler Temperature Sensor Circuit Intermittent/Erratic Bank 1) is: Loose or worn connector at the CAC temperature sensor with intermittent contact due to vibration
Typical repair costs for P007E range from $40 to $300, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Intermittent sensor readings may cause momentary boost adjustments and brief power fluctuations. The vehicle is generally safe to drive but may exhibit inconsistent performance under boost.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P007E to identify the root cause.
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Quick Info
Category
Powertrain
System
Turbocharger/Supercharger Boost Control System
Difficulty
Type
Generic (SAE)
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