P1845 Pontiac Code - 2-3 Shift Solenoid Circuit Low Input Voltage
Quick Answer
With the engine runtime over 5 seconds, system voltage from 8-1 8v, Fuel Cutoff inactive, the Powertrain Control Module (PCM) detects an open circuit or a short to ground on the 2-3 Shift Solenoid feedback circuit for 4.3 seconds. Common causes include Faulty 2-3 Shift Solenoid, 2-3 Shift Solenoid harness is open or shorted, 2-3 Shift 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
- P1845 Pontiac indicates 2-3 Shift Solenoid Circuit Low Input Voltage.
- Common causes
- Common causes include Faulty 2-3 Shift Solenoid, 2-3 Shift Solenoid harness is open or shorted, 2-3 Shift 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 P1845 Pontiac Description
What are the Possible Causes of the DTC P1845 Pontiac?
- Faulty 2-3 Shift Solenoid
- 2-3 Shift Solenoid harness is open or shorted
- 2-3 Shift Solenoid circuit poor electrical connection
How to Fix the DTC P1845 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 P1845 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 P1845 Pontiac Code
1. What does the OBDII code P1845 mean on a Pontiac?
The P1845 code indicates a problem with the 2-3 shift solenoid circuit, specifically low input voltage, which affects the transmission's ability to shift gears properly.
2. What are the symptoms of a P1845 code in a Pontiac?
Common symptoms include harsh or delayed shifting, failure to shift into certain gears, a check engine light, and reduced fuel efficiency.
3. What causes the P1845 code in a Pontiac?
Possible causes include a faulty 2-3 shift solenoid, damaged wiring or connectors in the solenoid circuit, a malfunctioning transmission control module (TCM), or low transmission fluid levels.
4. Can low transmission fluid trigger a P1845 code?
Yes, low or contaminated transmission fluid can lead to improper solenoid function, which may cause the P1845 code.
5. How do you diagnose a P1845 code in a Pontiac?
Diagnosis involves scanning for additional codes, inspecting the 2-3 shift solenoid and its wiring for damage, checking transmission fluid levels, and testing the solenoid circuit voltage with a multimeter.
6. How do you fix the P1845 code on a Pontiac?
Repairs may include replacing the 2-3 shift solenoid, repairing damaged wiring or connectors, cleaning or replacing dirty transmission fluid, or reprogramming the TCM if necessary.
7. Can you drive with a P1845 code on a Pontiac?
Driving with this code is not recommended, as it can cause further damage to the transmission and lead to unsafe driving conditions due to erratic shifting.
8. How much does it cost to fix a P1845 code on a Pontiac?
Repair costs vary but typically range from $150 to $400, depending on whether the solenoid or wiring needs replacement and if labor costs are involved.
9. Will clearing the P1845 code fix the issue?
Clearing the code without addressing the underlying problem will not fix the issue; the code will likely return once the vehicle is driven.
10. Can a bad TCM cause a P1845 code in a Pontiac?
Yes, a malfunctioning transmission control module can lead to communication issues with the 2-3 shift solenoid, resulting in the P1845 code.
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