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Home/DTC Codes/Nissan/Altima/2007-2012 2.5L I4/P0601
P0601

Internal Control Module Memory Check Sum Error

2007-2012 Nissan Altima 2.5L I4

High SeverityPowertrainGeneric (SAE)

Description

The PCM has detected a memory checksum error during self-test.

Symptoms

  • Check Engine Light
  • Erratic engine behavior
  • Possible no-start
  • Multiple system faults

Common Causes

  • PCM internal failure
  • PCM programming corruption
  • Voltage spike damage
  • Water intrusion into PCM

Diagnostic Steps

  1. Attempt PCM reprogramming/reflash
  2. Check for water damage to PCM
  3. Test PCM power and ground circuits
  4. Check for TSBs regarding PCM update

Repair Notes

Reprogram PCM first. If error persists, replace PCM.

Related Codes

P0600Serial Communication LinkP0602Control Module Programming ErrorP0606PCM Processor Fault

Other Powertrain Codes

P0601 on Other Vehicles

Nissan 200SX

1995-1998 1.6L I4 GA16DE

Nissan 200SX SE-R

1995-1998 2.0L I4 SR20DE

Nissan 240SX

1995-1998 2.4L I4 KA24DE

Nissan 300ZX

1990-1996 3.0L V6 VG30DE

Nissan 300ZX Twin Turbo

1990-1996 3.0L Twin-Turbo V6 VG30DETT

Nissan 350Z

2003-2006 3.5L V6 VQ35DE

Nissan 350Z

2007-2009 3.5L V6 VQ35HR

Nissan 370Z

2009-2020 3.7L V6 VQ37VHR

Common Questions

What does code P0601 mean on a 2007-2012 Nissan Altima?

P0601 stands for "Internal Control Module Memory Check Sum Error". The PCM has detected a memory checksum error during self-test.

What are the symptoms of P0601 on a Nissan Altima?

Common symptoms of P0601 include: Check Engine Light, Erratic engine behavior, Possible no-start, Multiple system faults.

What causes P0601 on a 2007-2012 Nissan Altima?

Common causes of P0601 include: PCM internal failure, PCM programming corruption, Voltage spike damage, Water intrusion into PCM.

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