P0122 Cadillac Code - Throttle Position Sensor 1 Circuit Low Voltage
Quick Answer
The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly 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
- P0122 Cadillac indicates Throttle Position Sensor 1 Circuit Low Voltage.
- Common causes
- Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly 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 P0122 Cadillac Description
What are the Possible Causes of the DTC P0122 Cadillac?
- Faulty Throttle Body Assembly
- Throttle Body Assembly harness is open or shorted
- Throttle Body Assembly circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0122 Cadillac?
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 P0122 Cadillac 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.
Need more information about the P0122 Cadillac code?
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Frequently Asked Questions about P0122 Cadillac Code
What does the OBDII code P0122 mean on a Cadillac?
P0122 indicates that the Throttle Position Sensor (TPS) 1 circuit is reporting a voltage lower than the expected range, often below 0.2 volts.
What are the common symptoms of code P0122 in a Cadillac?
Symptoms include poor acceleration, rough idling, engine stalling, hesitation during acceleration, and the illumination of the check engine light.
What causes the P0122 code in a Cadillac?
Common causes include a faulty throttle position sensor, damaged or corroded wiring, a loose or disconnected TPS connector, or a problem with the engine control module (ECM).
Can a dirty throttle body trigger the P0122 code?
Yes, a dirty throttle body can interfere with the TPS sensor’s readings and potentially cause the P0122 code.
How do you diagnose the P0122 code on a Cadillac?
Diagnosis involves checking the TPS voltage with a multimeter, inspecting the wiring and connectors, cleaning the throttle body, and using a scan tool to monitor sensor data.
Can you drive a Cadillac with the P0122 code?
Driving with the P0122 code is not recommended, as it can lead to poor engine performance, stalling, and unsafe driving conditions.
How do you fix the P0122 code on a Cadillac?
Repairs may include replacing the TPS sensor, cleaning the throttle body, repairing damaged wiring or connectors, or reprogramming the ECM if necessary.
How much does it cost to repair a P0122 code on a Cadillac?
The cost varies but generally ranges from $100 to $300, depending on whether the TPS sensor, wiring, or other components need replacement.
Can a bad TPS sensor cause other codes besides P0122?
Yes, a faulty TPS sensor can trigger related codes, such as P0121, P0123, or codes affecting fuel and air mixture control.
How can you prevent the P0122 code from reoccurring?
Regular maintenance, including cleaning the throttle body and inspecting the wiring and connectors, can help prevent the P0122 code from reappearing.
Discuss the causes and fixes for P0122 Cadillac OBDII Code
-
The service engine soon lights come on - on my 2004 Cadillac DeVille. After diagnostic testing it shows that the P0122 thottle pedal position sensor is the problem. Here are the symptoms: When I have to stop at a red light or a stop sign, the car completely shuts off. I noticed that if I keep my foot on the brake and the gas peddal at the same time, the car does not shut down. My conclusion is that If I take my foot off the gas, the car won't idle, however, on the contrary, when I got home and parked the car for a day or so, the car was idling perfectrly and this problem of breaking down without notice did not re-occur? Could this TPS be the only reason the car just went dead?
Please let me know.
Cassandra Lakes
Canada
[email protected] -
There is a service bulletin for this problem and the factory recommends the following:
- Disconnect /reconnect the negative battery cable and then see if the car will start.
- If the engine does not start, remove the PCM connectors and reinstall them to the PCM. Make sure the connector is fully seated before the locking slide is engaged. It is possible to have the PCM connector slide in the lock position with out having the connector completely seated into the PCM.
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