P1627 Cadillac Code - EC-PCM Analog To Digital Converter Conditions
Quick Answer
With the key on or engine running, the Powertrain Control Module (PCM) detects that the Engine Control Module (ECM) internal Analog to Digital converter had failed. Common causes include Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted, Engine Control Module (ECM) 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
- P1627 Cadillac indicates EC-PCM Analog To Digital Converter Conditions.
- Common causes
- Common causes include Faulty Engine Control Module (ECM), Engine Control Module (ECM) harness is open or shorted, Engine Control Module (ECM) 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 P1627 Cadillac Description
What are the Possible Causes of the DTC P1627 Cadillac?
- Faulty Engine Control Module (ECM)
- Engine Control Module (ECM) harness is open or shorted
- Engine Control Module (ECM) circuit poor electrical connection
How to Fix the DTC P1627 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 P1627 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 P1627 Cadillac code?
Need more information on how to fix the P1627 Cadillac code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1627 Cadillac code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1627 Cadillac Code
1. What does the OBDII code P1627 mean on a Cadillac?
P1627 indicates an issue with the Engine Control Module (ECM) or Powertrain Control Module (PCM) involving the Analog to Digital Converter not functioning within expected parameters.
2. What are the common symptoms of code P1627 on a Cadillac?
Symptoms can include poor engine performance, reduced fuel efficiency, difficulty starting the vehicle, or an illuminated Check Engine Light.
3. What causes the P1627 code to appear on a Cadillac?
Common causes include a faulty ECM/PCM, damaged wiring or connectors, electrical interference, or a malfunction in the analog-to-digital converter circuit.
4. Can I drive my Cadillac with the P1627 code active?
It is not recommended, as this code can affect engine performance and may lead to further damage if not addressed promptly.
5. How is the P1627 code diagnosed on a Cadillac?
A technician will use a scan tool to confirm the code, inspect wiring and connectors, test the ECM/PCM, and verify proper operation of the analog-to-digital converter circuit.
6. What repairs are needed to fix the P1627 code on a Cadillac?
Repairs may involve replacing or repairing damaged wiring, cleaning corroded connectors, or replacing the ECM/PCM if it is found to be defective.
7. How much does it typically cost to fix the P1627 code on a Cadillac?
Repair costs vary but can range from $100 for minor wiring repairs to over $1,000 if the ECM/PCM needs replacement.
8. Can a dead battery cause the P1627 code to appear on a Cadillac?
A weak or dead battery can contribute to electrical issues, but it is not a common cause of the P1627 code. However, it should be checked as part of the diagnosis.
9. What tools are needed to troubleshoot the P1627 code on a Cadillac?
A diagnostic scan tool, multimeter, and wiring diagrams are essential for accurately diagnosing and resolving the issue.
10. Is the P1627 code specific to Cadillacs?
No, the P1627 code can appear on other vehicles, but its interpretation and troubleshooting steps may vary depending on the make and model.
Discuss the causes and fixes for P1627 Cadillac OBDII Code
Code P1627 Cadillac comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
