P1810 Pontiac Code - Transmission Fluid Pressure Valve Position Switch Circuit
Quick Answer
The automatic Transmission Fluid Pressure (TFP) manual valve position switch consists of five pressure switches (two normally-closed and three normally-open) and a Transmission Fluid Temperature (TFT) sensor combined into one unit. Common causes include Faulty Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch, TFP Valve Position Switch harness is open or shorted, TFP Valve Position Switch 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
- P1810 Pontiac indicates Transmission Fluid Pressure Valve Position Switch Circuit.
- Common causes
- Common causes include Faulty Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch, TFP Valve Position Switch harness is open or shorted, TFP Valve Position Switch 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 P1810 Pontiac Description
The Powertrain Control Module (PCM) supplies ignition voltage for each range signal. By grounding one or more of the circuits through various combinations of the pressure switches, the PCM detects which manual valve position you select. The PCM compares the actual voltage combination of the switches to a TFP manual valve position switch combination table stored in memory.
The TFP manual valve position switch cannot distinguish between PARK and NEUTRAL because the monitored valve body pressures are identical. With the engine OFF and the ignition switch in the RUN position, the TFP manual valve position switch indicates PARK or NEUTRAL. Disconnecting the AT inline 20-way connector removes the ground potential for the three range signals to the PCM. In this case, with the engine OFF, and the ignition switch in the RUN position, D2 will be indicated.
What are the Possible Causes of the DTC P1810 Pontiac?
- Faulty Automatic Transmission Fluid Pressure (TFP) Manual Valve Position Switch
- TFP Valve Position Switch harness is open or shorted
- TFP Valve Position Switch circuit poor electrical connection
How to Fix the DTC P1810 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 P1810 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 P1810 Pontiac Code
1. What does OBDII code P1810 mean on a Pontiac?
Code P1810 indicates an issue with the Transmission Fluid Pressure (TFP) Valve Position Switch Circuit, which monitors transmission fluid pressure to ensure proper gear operation.
2. What are the common symptoms of code P1810 in a Pontiac?
Symptoms may include harsh or erratic shifting, the transmission being stuck in one gear, the Check Engine Light illuminating, and reduced fuel efficiency.
3. What causes the P1810 code on a Pontiac?
Common causes include a faulty TFP position switch, damaged wiring or connectors in the circuit, low or contaminated transmission fluid, or an internal transmission issue.
4. Can low transmission fluid cause the P1810 code?
Yes, low or contaminated transmission fluid can cause the TFP Valve Position Switch to malfunction, triggering the P1810 code.
5. How do you diagnose the P1810 code on a Pontiac?
Diagnosis involves checking the transmission fluid level and condition, inspecting the wiring and connectors to the TFP switch, and testing the TFP switch for proper operation using a multimeter.
6. What repairs can fix the P1810 code on a Pontiac?
Repairs may include replacing the TFP position switch, repairing or replacing damaged wiring or connectors, flushing and refilling the transmission fluid, or addressing internal transmission issues.
7. Is it safe to drive with the P1810 code active?
Driving with the P1810 code is not recommended, as it can lead to further transmission damage and unsafe driving conditions due to erratic shifting.
8. How much does it cost to fix the P1810 code on a Pontiac?
Repair costs can vary but typically range from $150 to $500 depending on whether the issue involves the TFP switch, wiring, or transmission fluid.
9. Can a bad TFP switch damage the transmission?
Yes, a faulty TFP switch can cause improper transmission operation, leading to excessive wear and potential internal damage over time.
10. Will clearing the P1810 code solve the problem?
Clearing the code without addressing the underlying issue may temporarily turn off the Check Engine Light, but the problem will likely reoccur until repaired.
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