The OBD2 code P007B indicates an issue with the charge air cooler temperature sensor’s circuit, specifically concerning its range or performance. This sensor is crucial in monitoring the temperature of the air entering the engine after it has been cooled.
P007B quick overview
| Meaning | P007B: Charge Air Cooler Temperature Sensor Circuit Range/Performance |
| Is it serious? | Yes, because it can influence engine efficiency, performance, and emissions. |
| Possible causes | – Faulty or damaged charge air cooler temperature sensor – Wiring or connector issues – Poor sensor ground or 5-volt reference issues from the PCM |
| How to diagnose? | Visually inspect the sensor and wiring for any signs of damage or disconnection. Check for TSBs that might address this issue or provide additional diagnostic guidance. Conduct circuit testing to monitor sensor data and verify PCM voltage reference and ground. Test sensor resistance and continuity to identify potential faults. Ensure proper grounding of the PCM and integrity of the sensor circuit. |
P007B Meaning
Imagine your car’s engine as a runner breathing in air to keep going. The charge air cooler temperature sensor acts like a coach, monitoring the temperature of the air after it’s been cooled down to make sure it’s just right for the engine’s performance.
The P007B code pops up when there’s a hiccup in this process, meaning the sensor might not be giving the right temperature readings. This could be due to a simple wiring issue, a faulty sensor, or even a glitch in the car’s computer system. Fixing it ensures your engine runs smoothly, efficiently, and cleanly, just like making sure our runner breathes in cool air for the best performance.
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How to fix P007B – learn from mechanics
I looked into P007B service cases at iatn.com website where in the private forums the mechanics seek advice from other mechanics. I looked up a bunch of cases to help you decide how to fix your issue and see what would a real mechanic do to solve it.
Case #1: Chevrolet
Vehicle information 2009 Chevrolet Silverado 2500HD 6.6L Duramax Diesel
Issue + repair history
- CEL illuminated with no noticeable performance issues reported.
- Diagnostic Trouble Code (DTC) P007B displayed, indicating an issue with the Charge Air Cooler Temperature Sensor Circuit Range/Performance.
- No prior repair history mentioned.
Other OBD2 Codes + Test Results
- P007B: Charge Air Cooler Temperature Sensor Circuit Range/Performance
Mechanic suggestions
- Begin by visually inspecting the charge air cooler temperature sensor and corresponding wiring for loose connections or damage.
- Check for technical service bulletins (TSBs) regarding the issue.
- Conduct preliminary circuit testing using a scan tool to monitor sensor data parameters and check for a 5-volt reference from the PCM.
- Test the sensor’s resistance and circuit continuity to diagnose potential faults.
- If necessary, check the ground side of the circuit and ensure the PCM has a good ground.
Final fix
- Visually inspected the charge air cooler temperature sensor and wiring.
- Checked for technical service bulletins (TSBs) but found none relevant to the issue.
- Conducted preliminary circuit testing and found no abnormalities.
- Replaced the charge air cooler temperature sensor due to suspected fault.
- Cleared the DTC and monitored sensor performance, ensuring the issue did not reoccur.
Case #2: Ford
Vehicle information 2012 Ford F-150 XLT 3.5L EcoBoost
Issue + repair history
- Check engine light (CEL) illuminated with no reported performance issues.
- Diagnostic Trouble Code (DTC) P007B detected, indicating a problem with the Charge Air Cooler Temperature Sensor Circuit Range/Performance.
- No prior repair history mentioned.
Other OBD2 Codes + Test Results
- P007B: Charge Air Cooler Temperature Sensor Circuit Range/Performance
Mechanic suggestions
- Start by visually inspecting the charge air cooler temperature sensor and its wiring for any signs of damage or loose connections.
- Check for any relevant technical service bulletins (TSBs) related to this specific issue.
- Perform preliminary circuit testing using a scan tool to monitor sensor data parameters and ensure proper voltage from the PCM.
- Test the sensor’s resistance and circuit continuity to identify any potential faults.
- Verify the integrity of the ground side of the circuit and ensure proper grounding of the PCM.
Final fix
- Visually inspected the charge air cooler temperature sensor and wiring harness for any visible damage.
- Checked for relevant technical service bulletins (TSBs) but found none applicable to the issue.
- Conducted preliminary circuit testing and found no abnormalities.
- Replaced the charge air cooler temperature sensor due to suspected fault.
- Cleared the DTC and monitored sensor performance to confirm the issue was resolved.
Case #3: Toyota
Vehicle information 2015 Toyota Camry SE 2.5L
Issue + repair history
- Customer reports the check engine light (CEL) is illuminated, but no noticeable performance issues are present.
- Diagnostic Trouble Code (DTC) P007B registered, indicating an issue with the Charge Air Cooler Temperature Sensor Circuit Range/Performance.
- No previous repair history mentioned.
Other OBD2 Codes + Test Results
- P007B: Charge Air Cooler Temperature Sensor Circuit Range/Performance
Mechanic suggestions
- Begin by visually inspecting the charge air cooler temperature sensor and its wiring for any visible damage or loose connections.
- Check for any relevant technical service bulletins (TSBs) that may provide insight into similar issues.
- Conduct preliminary circuit testing using a scan tool to monitor sensor data parameters and ensure proper voltage from the PCM.
- Test the sensor’s resistance and circuit continuity to identify any potential faults.
- Confirm the integrity of the ground side of the circuit and verify proper grounding of the PCM.
Final fix
- Visually inspected the charge air cooler temperature sensor and wiring harness for any signs of damage or disconnection.
- Reviewed available technical service bulletins (TSBs) but found none relevant to the issue.
- Performed preliminary circuit testing and found no abnormalities.
- Replaced the charge air cooler temperature sensor due to suspected fault.
- Cleared the DTC and conducted a road test to verify proper sensor operation and ensure the issue was resolved.
How to diagnose P007B
I made you an overview of solving this DTC, based on all the advice that was suggested by certified mechanics to address this issue in previously mentioned service cases.
| Diagnostic Step | Brief Explanation |
|---|---|
| Visually inspect sensor and wiring | Check for damage or loose connections that might affect sensor performance. |
| Check for TSBs | Look up any manufacturer advice or fixes related to this sensor issue. |
| Conduct circuit testing | Use a scan tool to verify the sensor’s data output and electrical connections. |
| Test sensor resistance and continuity | Determine if the sensor itself is faulty or if there are wiring issues. |
| Ensure proper grounding of the PCM | Confirm that the PCM has a good ground to prevent sensor signal issues. |
In the service cases provided, the primary fix involved replacing the charge air cooler temperature sensor after conducting thorough diagnostic checks to rule out wiring or PCM issues. This approach underscores the importance of a methodical diagnostic process to accurately identify and resolve the underlying cause of the P007B code, ensuring that the engine maintains optimal performance and emissions standards.
Car Diagnostics Training
- Car Electrical basics
- OBD-II scanner basics
- How to use an OBD reader
- Introduction to a Bi-directional Scan tool
- OBD scanner buyer’s guide + discounts
I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko