P0842 2017 Chevrolet Silverado Code - Transmission Fluid Pressure Switch 1 Circuit Low Voltage
Quick Answer
The Transmission Fluid Pressure (TFP) switch 1 is part of the control solenoid valve assembly, which has no serviceable parts. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve Assembly. 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
- P0842 2017 Chevrolet Silverado indicates Transmission Fluid Pressure Switch 1 Circuit Low Voltage.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty Transmission Control Solenoid Valve Assembly.
- 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 P0842 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0842 2017 Chevrolet Silverado?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty Transmission Control Solenoid Valve Assembly
- Transmission Control Solenoid Valve Assembly harness is open or shorted
- Transmission Control Solenoid Valve Assembly circuit poor electrical connection
How to Fix the DTC P0842 2017 Chevrolet Silverado?
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 P0842 2017 Chevrolet Silverado 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 P0842 2017 Chevrolet Silverado code?
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Frequently Asked Questions about P0842 2017 Chevrolet Silverado Code
1. What does OBDII code P0842 mean on a 2017 Chevrolet Silverado?
P0842 indicates "Transmission Fluid Pressure Switch 1 Circuit Low Voltage," meaning the transmission control module (TCM) has detected a low voltage signal from the transmission fluid pressure sensor circuit.
2. What are the common symptoms of code P0842 in a 2017 Chevrolet Silverado?
Common symptoms include harsh or delayed shifting, transmission slipping, failure to shift gears, reduced fuel efficiency, and the illumination of the check engine light.
3. What causes the P0842 code to appear on a 2017 Chevrolet Silverado?
Typical causes include a faulty transmission fluid pressure sensor, damaged wiring or connectors in the sensor circuit, low transmission fluid levels, or a malfunctioning transmission control module (TCM).
4. Can low transmission fluid cause the P0842 code?
Yes, low transmission fluid can cause this code because it may lead to insufficient pressure readings from the transmission fluid pressure sensor.
5. How do you diagnose the P0842 code on a 2017 Chevrolet Silverado?
Diagnosis involves checking the transmission fluid level, inspecting the wiring and connectors for damage, testing the transmission fluid pressure sensor, and scanning for additional codes using an OBDII scanner.
6. Can you drive a 2017 Chevrolet Silverado with code P0842?
Driving with this code is not recommended, as it may lead to transmission damage or unsafe driving conditions due to shifting issues.
7. How do you fix the P0842 code on a 2017 Chevrolet Silverado?
Repairs may include replacing the transmission fluid pressure sensor, repairing or replacing damaged wiring or connectors, topping off or flushing transmission fluid, or, in rare cases, replacing the TCM.
8. How much does it cost to fix the P0842 code on a 2017 Chevrolet Silverado?
Repair costs vary but typically range from $100 to $300 for sensor replacement. Additional costs may apply for wiring repairs or TCM replacement.
9. Can a dirty transmission filter trigger the P0842 code?
Yes, a clogged transmission filter can restrict fluid flow, leading to low pressure readings and potentially triggering the P0842 code.
10. Will resetting the check engine light fix the P0842 code?
Resetting the light may temporarily clear the code, but the underlying issue must be addressed to prevent the code from returning.
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