P151E Cadillac Code - Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect
Quick Answer
The active grille air shutter system closes shutters in the front grille to enhance vehicle aerodynamics in driving situations where cooling and A/C loads are relatively low and high levels of front-end airflow are not required. Common causes include Faulty Active Grille Air Shutter Actuator, Active Grille Air Shutter Actuator harness is open or shorted, Active Grille Air Shutter Actuator circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P151E Cadillac indicates Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Active Grille Air Shutter Actuator, Active Grille Air Shutter Actuator harness is open or shorted, Active Grille Air Shutter Actuator circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P151E Cadillac Description
The dual active grille air shutter system consists of two aero shutter mechanisms located in the front grille for controlling the amount of air flowing through the grille. It includes three wires; ground, power, and a Local Interconnect Network (LIN) Bus serial data circuit from the ECM to the shutter actuator. The ECM determines shutter state based on various vehicle conditions such as vehicle speed, coolant temperature, fan state, refrigerant system pressure, A/C compressor state, and ambient temperature. The ECM has the ability to command each shutter individually to the open or closed positions through communications on the LIN Bus.
The actuators are powered by an ignition circuit that is active when the key is in the RUN position. The vehicle may have to be driven for up to 13 minutes at speeds greater than 41 km/h (25 mph) before a shutter begins to move. If low ambient temperature is detected, the shutters will remain in the closed position.
The Diagnostic Trouble Code (DTC) will be set if there a LIN Bus Communication Malfunction
What are the Possible Causes of the DTC P151E Cadillac?
- Faulty Active Grille Air Shutter Actuator
- Active Grille Air Shutter Actuator harness is open or shorted
- Active Grille Air Shutter Actuator circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P151E Cadillac?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P151E Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P151E Cadillac code?
Need more information on how to fix the P151E Cadillac code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P151E Cadillac code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P151E Cadillac Code
1. What are the common symptoms of OBDII code P151E in a Cadillac related to the Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect?
- Common symptoms include poor engine performance, reduced fuel efficiency, and possible illumination of the check engine light.
2. What are the possible causes of OBDII code P151E in a Cadillac?
- The code P151E can be triggered by issues such as a faulty Active Grille Air Shutter Actuator, damaged wiring, or a malfunctioning control module.
3. How can I diagnose the cause of OBDII code P151E in my Cadillac?
- Proper diagnosis involves using an OBDII scanner to retrieve the code, inspecting the actuator and its wiring for any visible damage, and testing the electrical connections.
4. Is it safe to continue driving with OBDII code P151E in a Cadillac?
- It is not recommended to drive with the code P151E present, as it can lead to further damage and affect the vehicle's performance.
5. Can I repair OBDII code P151E in my Cadillac myself?
- While some DIY enthusiasts may attempt to address this issue, it is recommended to consult a professional mechanic due to the complexity of the repair involving the Active Grille Air Shutter Actuator.
6. How much does it typically cost to repair OBDII code P151E in a Cadillac?
- The cost of repairing OBDII code P151E can vary depending on the specific cause, but it may involve replacing the faulty actuator, repairing wiring, or reprogramming the control module.
7. Are there any preventive measures to avoid OBDII code P151E in a Cadillac?
- Regular maintenance checks, including inspecting the actuator and its connections, can help prevent issues that may trigger the code P151E.
8. Can a malfunctioning Active Grille Air Shutter Actuator affect other systems in a Cadillac?
- Yes, a malfunctioning actuator can impact engine performance, fuel efficiency, and potentially trigger other related codes if not addressed promptly.
9. How urgent is it to address OBDII code P151E in a Cadillac?
- It is advisable to address the code P151E as soon as possible to prevent further damage and ensure optimal vehicle performance.
10. Will resetting the OBDII code P151E in a Cadillac make it go away permanently?
- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not fixed, the code is likely to reappear.
Discuss the causes and fixes for P151E Cadillac OBDII Code
Code P151E Cadillac comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
