P0742 Pontiac Code - Torque Converter Clutch Circuit Stuck On
Quick Answer
The Torque Converter Clutch (TCC) solenoid valve is a normally-open exhaust valve that is used with the Torque Converter Clutch Pulse Width Modulation (TCC PWM) solenoid valve in order to control fluid acting on the converter clutch apply valve. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty torque converter clutch solenoid valve. 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
- P0742 Pontiac indicates Torque Converter Clutch Circuit Stuck On.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty torque converter clutch solenoid valve.
- 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 P0742 Pontiac Description
What are the Possible Causes of the DTC P0742 Pontiac?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty torque converter clutch solenoid valve
- Torque converter clutch solenoid valve harness or connectors
- Torque converter clutch solenoid valve circuit is open or shorted
- Transmission internal mechanical problem
How to Fix the DTC P0742 Pontiac?
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.
Code Tech Notes
There is a factory service bulletin for the following Pontiac Models:
2001-2005 Pontiac Montana
2001-2005 Pontiac Montana EXT
2001-2005 Pontiac Aztek
2001-2005 Pontiac Aztek AWD
2001-2005 Pontiac Bonneville
2001-2008 Pontiac Grand Prix
2002-2005 Pontiac Montana 4WD
2005-2006 Pontiac Montana SV6 (AWD)
2005-2008 Pontiac Montana SV6
2005-2008 Pontiac Montana SV6 EXT
Pontiac Factory Service Bulletin OBDII Code P0742
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0742 Pontiac 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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Frequently Asked Questions about P0742 Pontiac Code
What does the OBDII code P0742 mean for a Pontiac?
P0742 indicates that the torque converter clutch circuit is stuck on, meaning the clutch may be engaged when it shouldn't be.
What are the symptoms of code P0742 in a Pontiac?
Symptoms may include engine stalling when coming to a stop, reduced fuel efficiency, transmission overheating, or difficulty shifting gears.
What causes the P0742 code in a Pontiac?
Common causes include a faulty torque converter clutch solenoid, damaged wiring or connectors, low or dirty transmission fluid, or internal transmission issues.
Can driving with the P0742 code damage my Pontiac?
Yes, driving with this code can lead to transmission overheating, reduced performance, or long-term damage to the transmission if not addressed promptly.
How do I diagnose the P0742 code on a Pontiac?
Diagnosis typically involves scanning for related codes, inspecting wiring and connectors, checking transmission fluid condition, and testing the torque converter clutch solenoid.
What repairs can fix the P0742 code on a Pontiac?
Repairs may include replacing the torque converter clutch solenoid, repairing damaged wiring, flushing or replacing transmission fluid, or addressing internal transmission issues.
How much does it cost to fix the P0742 code on a Pontiac?
Repair costs vary but may range from $200 to $600 for solenoid replacement. Extensive transmission repairs can cost significantly more.
Can low transmission fluid cause the P0742 code in a Pontiac?
Yes, low or contaminated transmission fluid can contribute to this code by affecting solenoid operation and clutch engagement.
How can I prevent the P0742 code from occurring in my Pontiac?
Regular transmission maintenance, including fluid changes and inspections, can help prevent issues leading to this code.
Is P0742 a common issue in Pontiac vehicles?
While not extremely common, P0742 can occur in Pontiacs with aging transmissions or improper maintenance.
Discuss the causes and fixes for P0742 Pontiac OBDII Code
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