P1685 Pontiac Code - Transmission Control Module Power Up Temperature Sensor Circuit Low Voltage
Quick Answer
The Transmission Control Module (TCM) power up the temperature sensor is located inside of the control solenoid (w/body and TCM) valve assembly and has no serviceable parts. Common causes include Reprogram TCM and recheck code, Replace Transmission Control Module (TCM) Sensor/body assembly one piece. 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
- P1685 Pontiac indicates Transmission Control Module Power Up Temperature Sensor Circuit Low Voltage.
- Common causes
- Common causes include Reprogram TCM and recheck code, Replace Transmission Control Module (TCM) Sensor/body assembly one piece.
- 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 P1685 Pontiac Description
What are the Possible Causes of the DTC P1685 Pontiac?
- Reprogram TCM and recheck code
- Replace Transmission Control Module (TCM) Sensor/body assembly one piece
How to Fix the DTC P1685 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1685 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 P1685 Pontiac Code
1. What does the OBDII code P1685 indicate on a Pontiac?
Code P1685 on a Pontiac indicates a problem with the Transmission Control Module (TCM) Power Up Temperature Sensor Circuit, specifically that there is low voltage detected in the circuit.
2. What are common symptoms of code P1685 in a Pontiac?
Symptoms may include transmission shifting issues, the transmission entering limp mode, the check engine light turning on, and possibly the engine stalling or having difficulty starting.
3. What causes the P1685 code to appear on a Pontiac?
Potential causes include a faulty transmission control module, wiring issues like shorts or disconnections in the temperature sensor circuit, or a bad temperature sensor itself.
4. How can I diagnose the P1685 code in my Pontiac?
Diagnosis should start with a visual inspection of the TCM and associated wiring. Check for damaged wires, loose connections, and signs of corrosion. Use an OBDII scanner to check for additional codes that might provide further insight.
5. What steps are involved in repairing the P1685 code on a Pontiac?
Repair steps may include replacing the transmission temperature sensor, repairing or replacing damaged wiring or connectors, or in more severe cases, replacing the transmission control module.
6. Can I drive my Pontiac with the P1685 code active?
While you may be able to drive with this code active, it is not recommended as it can lead to further damage to the transmission system. It's best to address the issue promptly to avoid potential safety risks and more costly repairs later.
7. Is the P1685 code serious for the health of my Pontiac’s transmission?
Yes, this code is serious as it affects the transmission control module, which is crucial for proper transmission operation. Ignoring this code can lead to impaired driving performance and potential transmission failure.
8. What tools are needed to diagnose the P1685 code on a Pontiac?
Tools needed include an OBDII scanner, a multimeter for testing circuit voltages, and potentially a scan tool with advanced capabilities for deeper analysis of the transmission control module’s function.
9. How much does it typically cost to fix the P1685 code in a Pontiac?
Costs can vary widely depending on the specific repair needed. Simple wiring repairs might cost a few hundred dollars, while replacing the transmission control module could run over a thousand dollars, depending on the model and labor rates.
10. How can I prevent the P1685 code from recurring in my Pontiac?
Regular maintenance of your vehicle’s transmission and electrical systems is key. Ensure that wiring is checked during routine service to prevent issues related to poor connections or damaged wires.
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