Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is getting a signal that is too high from the part that helps control the amount of exhaust gas going back into the engine. It's like getting a really loud noise from a walkie-talkie when it should be quiet.
The code indicates that the voltage in the EGR throttle control circuit is higher than expected, suggesting a potential issue with the circuit or the EGR throttle itself.
P2142 is triggered when the Engine Control Module (ECM) detects a high voltage condition in the Exhaust Gas Recirculation (EGR) Throttle Control Circuit A. This may be due to a short to voltage within the circuit, a faulty EGR throttle control valve, or issues within the ECM itself.
• Check Engine Light is on
• Poor engine performance
• Increased emissions
• Faulty EGR throttle control valve
• Short to voltage in the EGR throttle control circuit
• Faulty Engine Control Module (ECM)
EGR: Exhaust Gas Recirculation
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the EGR throttle control circuit for short circuits or damage.
• Test the EGR throttle control valve for proper operation.
• Repair or replace damaged wiring in the EGR throttle control circuit.
• Replace the EGR throttle control valve if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance of the EGR system
• Avoiding short trips to prevent carbon buildup
• Using quality fuel to reduce deposits
Sensor Issue
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle excessively until the issue is resolved.
Check with the vehicle manufacturer for any applicable emissions warranty coverage.
P2142 is a relatively uncommon code but can occur in vehicles with EGR systems that are prone to carbon buildup.
Moderate – While the vehicle may still be drivable, it can lead to increased emissions and reduced performance.
Driving with a malfunctioning EGR system can lead to higher emissions, which may not comply with local environmental regulations.
• Engine at operating temperature
• Vehicle in closed loop operation
The EGR throttle control valve is typically located near the intake manifold, connected to the exhaust system.
Q: Can I drive with a P2142 code?
A: It's possible to drive with this code, but it may lead to poor performance and increased emissions.
Q: How serious is the P2142 code?
A: While not immediately critical, it should be addressed to avoid long-term engine performance issues.
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