P1623 Cadillac Code - Transmission Fluid Temperature Sensor Pullup Resistor Circuit Conditions
Quick Answer
The P1623 diagnostic trouble code for Cadillac vehicles specifically refers to the Transmission Fluid Temperature Sensor Pullup Resistor Circuit Conditions. Common causes include Faulty transmission fluid temperature sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to the sensor or circuit components. 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
- P1623 Cadillac indicates Transmission Fluid Temperature Sensor Pullup Resistor Circuit Conditions.
- Common causes
- Common causes include Faulty transmission fluid temperature sensor, Wiring or connector issues in the sensor circuit, Corrosion or damage to the sensor or circuit components.
- 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.
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Code P1623 Cadillac Description
The P1623 diagnostic trouble code for Cadillac vehicles specifically refers to the Transmission Fluid Temperature Sensor Pullup Resistor Circuit Conditions. This code indicates that the engine control module (ECM) has detected an issue with the transmission fluid temperature sensor's pullup resistor circuit. The transmission fluid temperature sensor is responsible for monitoring the temperature of the transmission fluid and sending this data to the ECM. The pullup resistor circuit helps to provide a stable reference voltage for the sensor.
Common Causes of P1623 Cadillac
- Faulty transmission fluid temperature sensor
- Wiring or connector issues in the sensor circuit
- Corrosion or damage to the sensor or circuit components
- ECM malfunction or software issues
- Electrical short or open circuit in the sensor circuit
Symptoms of P1623 Cadillac
- Erratic shifting patterns
- Harsh or delayed shifts
- Transmission slippage
- Decreased fuel efficiency
- Illumination of the Check Engine Light
How to Fix P1623 Cadillac
- Diagnose the issue by using a scan tool to retrieve the fault code and testing the transmission fluid temperature sensor and its circuit.
- Inspect the wiring and connectors for any damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the transmission fluid temperature sensor's resistance and compare it to the manufacturer's specifications. Replace the sensor if it is out of range.
- Clear the fault code from the ECM memory and reset the system.
- Test drive the vehicle to ensure that the transmission is shifting correctly and that the code does not reappear.
Cost to Fix P1623 Cadillac
The typical repair costs for addressing the P1623 code related to the Transmission Fluid Temperature Sensor Pullup Resistor Circuit Conditions can vary depending on the specific issue and the vehicle's make and model. In general, the cost of parts for a new transmission fluid temperature sensor can range from $50 to $150, while the labor costs for diagnosis and repair may range from $100 to $300. Overall, the total repair cost for this issue could range from $150 to $450 at an independent auto repair shop. It is important to note that these estimates are rough guidelines, and actual costs may vary based on individual circumstances. It is recommended to consult with a professional mechanic for a more accurate cost estimate based on the specific vehicle and location.
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