Nissan Altima P1212 TCS Communication Line

When your Nissan vehicle triggers Diagnostic Trouble Code (DTC) P1212, it signifies a potential issue with the Traction Control System (TCS) Communication Line. This article aims to provide a comprehensive understanding of this code by merging information from two sources—Nissan Sentra Service Manual and insights on the P1212 code for Nissan Altima.


Nissan Sentra Service Manual Insights

Definition and Description

In the Nissan Sentra Service Manual, DTC P1212 is associated with the TCS Communication Line. It emphasizes the importance of troubleshooting other related DTCs before addressing P1212. The communication line, crucial for smooth engine operation during TCS, exchanges pulse signals between the Engine Control Module (ECM) and the ABS actuator and electric unit.

DTC Logic and Causes

The manual outlines a logical approach to diagnosing P1212, including reference to other potential DTCs like U1001 and P0607. Causes may include issues with the harness, connectors, CAN communication line, ABS actuator, or a weak battery.

Diagnosis Procedure

The article details a step-by-step diagnostic procedure, including preconditions and testing conditions, guiding technicians through the process. It underscores the importance of confirming DTCs and provides a workflow for troubleshooting.


Nissan Altima P1212 Code Overview

Code Meaning and Causes

On the Altima side, the P1212 code is described as a communication error between the Traction Control (ABS) module and the Engine Control Module. The article provides a concise definition and mentions potential causes such as low oil reservoir, faulty injection pressure regulator valve, or issues with related components.

How to Fix and Cost

The article offers guidance on fixing the P1212 code, advising users to check possible causes and visually inspect wiring harnesses and connectors. It also provides information on the cost to diagnose this code, indicating an average labor time and associated charges.

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