P1850 Pontiac Code - Brake Band Apply Solenoid Circuit
Quick Answer
With the engine running, Transmission Control Module (TCM) High Side driver is closed, the Powertrain Control Module (PCM) detects that the Band Control solenoid was commanded off and the feedback voltage was less than 2.45v, or the Band Control solenoid was commanded off and the feedback voltage was from 2.45 -3.53v, or the Band Control solenoid was commanded on and the feedback voltage was more than 4.02v. Common causes include Faulty Brake Band Apply Solenoid, Brake Band Apply Solenoid harness is open or shorted, Brake Band Apply Solenoid circuit poor electrical connection. 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
- P1850 Pontiac indicates Brake Band Apply Solenoid Circuit.
- Common causes
- Common causes include Faulty Brake Band Apply Solenoid, Brake Band Apply Solenoid harness is open or shorted, Brake Band Apply Solenoid circuit poor electrical connection.
- 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 P1850 Pontiac Description
What are the Possible Causes of the DTC P1850 Pontiac?
- Faulty Brake Band Apply Solenoid
- Brake Band Apply Solenoid harness is open or shorted
- Brake Band Apply Solenoid circuit poor electrical connection
How to Fix the DTC P1850 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 P1850 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 P1850 Pontiac Code
1. What does the OBDII code P1850 mean on a Pontiac?
The P1850 code indicates an issue with the Brake Band Apply Solenoid Circuit, which is part of the transmission system responsible for gear shifting.
2. What are the common symptoms of the P1850 code in a Pontiac?
Symptoms may include erratic shifting, the transmission not engaging properly, reduced fuel efficiency, or the Check Engine Light being illuminated.
3. What causes the P1850 code to appear?
Common causes include a faulty brake band apply solenoid, damaged wiring or connectors in the solenoid circuit, or a malfunctioning transmission control module (TCM).
4. Can I still drive my Pontiac with a P1850 code?
Driving with a P1850 code can cause further damage to the transmission and is not recommended until the issue is diagnosed and repaired.
5. How do I diagnose the P1850 code?
Diagnosis involves using an OBDII scanner to confirm the code, visually inspecting the solenoid wiring and connectors, and testing the solenoid for proper function.
6. How do I fix the P1850 code on a Pontiac?
Repairs may include replacing the brake band apply solenoid, repairing or replacing damaged wiring, or reprogramming or replacing the TCM if necessary.
7. How much does it cost to fix the P1850 code?
Repair costs vary depending on the cause, but replacing the solenoid typically costs between $200 and $400, while wiring repairs may cost less.
8. Can a low transmission fluid level trigger the P1850 code?
While not a direct cause, low or dirty transmission fluid can affect solenoid performance and exacerbate related issues.
9. Is the P1850 code specific to Pontiac vehicles?
No, the P1850 code can appear on other vehicle brands, but its meaning and repair procedures may vary slightly.
10. Will clearing the P1850 code fix the issue?
Clearing the code without addressing the underlying problem will temporarily remove the warning, but the code will likely return.
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