Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer stopped adjusting the throttle valve because the outside conditions, like temperature or air pressure, aren't right.
The throttle valve controls how much air goes into the engine. The car's computer adjusts it to make sure the engine runs smoothly. This code appears when the computer can't adjust it because of environmental factors.
The P1642 code indicates that the throttle valve adaptation process was halted due to environmental values being outside the expected range. This can affect the engine's ability to maintain optimal air-fuel mixture and performance.
• Engine hesitation
• Poor acceleration
• Check engine light on
• Extreme temperatures
• Incorrect air pressure readings
• Faulty sensors
Throttle Valve: A part that controls the amount of air entering the engine.
Adaptation: The process by which the car's computer adjusts engine components for optimal performance.
• Check for other related codes
• Inspect throttle body for dirt or obstructions
• Verify sensor readings for accuracy
• Clean the throttle body
• Replace faulty sensors
• Reset the throttle adaptation using a diagnostic tool
• OBD-II scanner
• Throttle body cleaner
• Basic hand tools
$100 - $300
Moderate
• Volkswagen Jetta
• Audi A4
• Skoda Octavia
• Regular maintenance of throttle body
• Ensure sensors are functioning correctly
• Avoid driving in extreme conditions when possible
Engine Performance
• Avoid driving aggressively until the issue is resolved
• Consult a professional mechanic if unsure about the repair
Check with the vehicle manufacturer for warranty coverage on throttle body components.
This code has been associated with issues in vehicles operating in extreme environmental conditions, often requiring sensor recalibration.
Moderate – Addressing this issue can prevent further engine performance problems.
Driving with engine performance issues can be unsafe and may lead to increased emissions.
• Vehicle at operating temperature
• Stable environmental conditions
The throttle body is typically located between the air filter and the intake manifold.
Q: Can I drive with the P1642 code?
A: It's possible, but not recommended as it may affect engine performance.
Q: Will clearing the code fix the problem?
A: Clearing the code may turn off the check engine light temporarily, but the underlying issue needs to be addressed.
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