AutoCodes – Cadillac – P1270 Cadillac

P1270 Cadillac Code - Accelerator Pedal Position Sensor A/D Converter Error

Quick Answer

The Accelerator Pedal Position (APP) sensors are located within the Throttle Actuator Control (TAC) module assembly. Common causes include Faulty Accelerator Pedal Position (APP), Accelerator Pedal Position harness is open or shorted, Accelerator Pedal Position 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: P1270 Cadillac indicates Accelerator Pedal Position Sensor A/D Converter Error.
Common causes: Common causes include Faulty Accelerator Pedal Position (APP), Accelerator Pedal Position harness is open or shorted, Accelerator Pedal Position 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.

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Code Popularity 3,147

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1270 Cadillac Description

The Accelerator Pedal Position (APP) sensors are located within the Throttle Actuator Control (TAC) module assembly. The TAC module assembly is mounted to the accelerator pedal bracket. There are 3 individual APP sensors within the TAC module. Three separate signal circuits, low reference circuits, and 5-volt reference circuits are used in order to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is depressed.

OBDII Code P1270 Cadillac - Accelerator Pedal Position Sensor A/D Converter Error - AutoCodes.com — P1270 Cadillac Code - Accelerator Pedal Position Sensor A/D Converter Error

What does this mean?

What are the Possible Causes of the DTC P1270 Cadillac?

Faulty Accelerator Pedal Position (APP)
Accelerator Pedal Position harness is open or shorted
Accelerator Pedal Position circuit poor electrical connection

How to Fix the DTC P1270 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 P1270 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.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1270 Cadillac Code

1. What does the OBDII code P1270 mean on a Cadillac?

P1270 indicates an "Accelerator Pedal Position Sensor A/D Converter Error," meaning the sensor or its circuit is not functioning properly.

2. What are the common symptoms of code P1270?

Symptoms include reduced engine performance, poor acceleration, a stuck throttle, or the vehicle entering limp mode. The check engine light may also illuminate.

3. What causes the P1270 code on a Cadillac?

Possible causes include a faulty accelerator pedal position (APP) sensor, damaged wiring or connectors, or issues with the throttle body or related circuits.

4. Can I drive my Cadillac with a P1270 code?

Driving with this code may be risky, as it can lead to unpredictable throttle response or limited engine power. It’s best to address the issue promptly.

5. How do you diagnose the P1270 code?

Diagnosis involves using an OBDII scanner to confirm the code, visually inspecting the APP sensor and wiring, and testing the sensor’s voltage and signals with a multimeter.

6. How do you fix the P1270 error code?

Repairs could include replacing the APP sensor, fixing damaged wiring or connectors, or recalibrating the throttle position system if necessary.

7. How much does it cost to repair a P1270 code on a Cadillac?

Repair costs vary but typically range from $150 to $400, depending on whether you need a new APP sensor, wiring repairs, or professional diagnostics.

8. Can a dirty throttle body trigger the P1270 code?

Yes, a dirty or malfunctioning throttle body can affect the APP sensor's operation and potentially trigger this code.

9. Does the P1270 code require reprogramming the ECU?

Reprogramming the ECU is not usually required, but a reset or recalibration of the throttle position system may be necessary after repairs.

10. Can I fix the P1270 code myself?

If you have basic mechanical skills, you can inspect the APP sensor and wiring, but more complex repairs or diagnostics may require professional assistance.