P16A2 Code - Throttle Position Sensor Communication Circuit Performance
Quick Answer
The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. Common causes include Faulty Throttle Body Assembly, Throttle Body harness is open or shorted, Throttle Body 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
- P16A2 indicates Throttle Position Sensor Communication Circuit Performance.
- Common causes
- Common causes include Faulty Throttle Body Assembly, Throttle Body harness is open or shorted, Throttle Body 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 P16A2 Description
What are the Possible Causes of the DTC P16A2?
- Faulty Throttle Body Assembly
- Throttle Body harness is open or shorted
- Throttle Body circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P16A2?
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 P16A2 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.
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Information for Specific Makes
- P16A2 Buick — Throttle Position Sensor Communication Circuit Performance
- P16A2 Cadillac — Throttle Position Sensor Communication Circuit Performance
- P16A2 Chevrolet — Throttle Position Sensor Communication Circuit Performance
- P16A2 GMC — Throttle Position Sensor Communication Circuit Performance
Frequently Asked Questions about P16A2 Code
1. What does the OBDII code P16A2 mean?
P16A2 indicates a communication performance issue in the throttle position sensor (TPS) circuit, which monitors the position of the throttle in the engine.
2. What are the common symptoms of code P16A2?
Symptoms may include reduced engine performance, poor acceleration, rough idling, or the vehicle going into limp mode.
3. What causes the P16A2 code to appear?
Common causes include a faulty throttle position sensor, damaged wiring or connectors in the TPS circuit, or issues with the engine control module (ECM).
4. How do I diagnose the P16A2 code?
Start by checking the wiring and connectors for damage or corrosion, test the throttle position sensor for proper operation, and scan for additional related codes.
5. Can I drive with the P16A2 code active?
While the vehicle may still be drivable, it can experience reduced performance and safety risks. It’s best to address the issue promptly.
6. How do I fix the P16A2 code?
Repairs may involve replacing the throttle position sensor, repairing or replacing damaged wiring, or reprogramming or replacing the ECM if necessary.
7. How much does it cost to fix the P16A2 code?
Repair costs vary but typically range from $150 to $400, depending on whether the throttle position sensor or other components need replacement.
8. Can a dirty throttle body cause the P16A2 code?
A dirty throttle body can sometimes affect throttle position sensor readings, so cleaning it may help resolve the issue if no other faults are found.
9. Does the P16A2 code always mean the sensor is bad?
Not necessarily. The issue could also stem from wiring problems, connectivity issues, or ECM malfunctions.
10. Will clearing the P16A2 code with a scanner fix the problem?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.
Discuss the causes and fixes for P16A2 OBDII Code
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