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Powertrain

P18AE

Code meaning and manufacturer information

OBD-II / DTC

Reference meaning

What does this code mean?

The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.

A code identifies a detected condition, not a part that must automatically be replaced.

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A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Before replacing a part

Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.

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Manufacturer communications

2

Original wording in English

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23-NA-210 ↗

CADILLAC, CHEVROLET, GMC

This bulletin provides a procedure to perform a diagnostic check to verify if DTCs P18AE and/or P0700 Set returns when reset and to clear the codes and validate code does not set again.

23-NA-210 ↗

CADILLAC, CHEVROLET, GMC

This bulletin provides a procedure to perform a diagnostic check to verify if DTCs P18AE and/or P0700 Set returns when reset and to clear the codes and validate code does not set again.

Check vehicle applicability

18

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

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MakeModelModel year
CadillacCT4 ↗2025
CadillacCT4 ↗2024
CadillacCT4 ↗2023
CadillacCT5 ↗2025
CadillacCT5 ↗2024
CadillacCT5 ↗2023
CadillacESCALADE ↗2025
CadillacESCALADE ↗2024

Can I keep driving?

A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.