The OBD2 code P007D pops up when there’s an issue with the sensor that monitors the temperature of the air going into the turbocharger, showing a signal that’s too high. This problem can lead to your vehicle running poorly, like experiencing rough idles or a noticeable drop in power.
P007D quick overview
| Meaning | P007D: Boost/Air Charge Temperature Sensor Voltage High |
| Is it serious? | Yes, because it affects your vehicle’s performance and fuel efficiency. |
| Possible causes | – Broken air temperature sensor – Wires or connectors in bad shape – Issues with the PCM, including bent pins – Electrical shorts in the circuit |
| How to diagnose? | Load test wiring for any damage. Check wire continuity for breaks. Verify PCM voltage without the sensor connected. Search for shorts to power or ground. Examine wires for pinching or damage. |
P007D Meaning
If your vehicle shows the P007D code, it’s usually because the sensor that checks the air’s temperature for the turbocharger isn’t working right, sending back readings that are too high. This can make your vehicle act up, like losing power when you need it. Fixing it mostly involves looking closely at the sensor and its connections, making sure everything is connected properly and not damaged.
Car Diagnostics Training
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How to fix P007D – learn from mechanics
I looked into P007D 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: Ford P007D
Vehicle information
2011 Ford F-150 Platinum, 3.5L engine
Issue + repair history
- MIL lamp illuminated
- Replaced boost/air charge temp sensor
- Replaced sensor connector
- Followed diagnostic flow chart for code P007D
- Continuity tests and sensor replacements did not resolve the issue
Other OBD2 Codes + Test Results
- P007D: Boost/Air charge temp sensor voltage high
- No additional fault codes detected
- Voltage PID shows 5.00 volts with -38 deg temperature
Mechanic suggestions
- Load test wiring from sensor connector to PCM
- Check continuity and resistance from sensor to PCM
- Verify proper voltage with sensor unplugged at PCM
- Test for short to power and short to ground
- Check for pinched wires or rub through at mounting points
Final fix
Discovered a pin laid over and touching another pin in the PCM. Carefully straightened the pin and reinstalled the PCM, issue resolved.
Case #2: Ford P007D
Vehicle information
2011 Ford F-250 Super Duty King Ranch, 6.7L engine
Issue + repair history
- MIL lamp illuminated with code P007D
- Truck experiencing intermittent surge and dead pedal at 40 mph
- CP4 Disaster prevention kit installed, requiring removal of upper/lower intakes
- Discovered wiring for CAC temp sensor dislodged and rubbing on serpentine belt
- Repaired damaged wiring and replaced CAC temp sensor
- Despite repairs, P007D code persisted
Other OBD2 Codes + Test Results
- P007D: Charge Air Cooler Temperature Sensor High Bank 1
- No additional fault codes detected
- CAC temp reading stuck at -39°F and voltage at 5 volts
Mechanic suggestions
- Check all temperature sensor readings with engine cold to ensure they are within 10 degrees of each other
- Verify sensor readings at the charge air cooler itself
- Investigate for short to ground or open circuit for CAC sensor
- Consider the possibility of induced current from the serpentine belt affecting PCM
- Test voltage at unplugged harness feed and use test light from battery positive to unplugged face of harness on return wire
Final fix
Discovered multiple breaks in the signal return wire for the CAC temp sensor further along the rub area. Repaired the wire, and after a test drive, the sensor readings returned to normal. Issue resolved, including the intermittent surge and dead pedal, potentially caused by previous improper wiring installation.
Case #3: Dodge P007D
Vehicle information
2015 Dodge Ram 1500 Laramie, 5.7L engine
Issue + repair history
- MIL lamp illuminated with code P007D
- Truck experiencing rough idling and reduced engine power
- Replaced charge air cooler temperature sensor
- Inspected wiring harness for any visible damage
- Code persisted after sensor replacement
Other OBD2 Codes + Test Results
- P007D: Charge Air Cooler Temperature Sensor High Bank 1
- No additional fault codes detected
- Live data shows erratic temperature readings from the sensor
Mechanic suggestions
- Perform detailed inspection of wiring harness, especially near areas prone to rubbing or damage
- Test resistance and continuity of wiring from sensor to PCM
- Consider performing a voltage drop test on the wiring to identify any potential issues
- Check for any aftermarket modifications or additions that could affect sensor performance
Final fix
Discovered a damaged wire within the wiring harness leading to the PCM. Repaired the wire and cleared codes, issue resolved.
How to diagnose P007D
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 |
|---|---|
| Load test wiring from sensor to PCM | Checks if the wires can handle electricity without issues. |
| Check wire continuity | Finds any breaks in the wires that could cause problems. |
| Verify PCM voltage | Makes sure the PCM gets the right voltage with the sensor off. |
| Search for shorts | Looks for accidental electrical connections causing high readings. |
| Examine wires | Checks for any wire damage or pinching that could mess with signals. |
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