P0601 on Jeep
Internal Control Module Memory Check Sum Error
P0601 on Jeep vehicles indicates internal control module memory check sum error. Au7o has documented this code across 1 Jeep model — most commonly on Grand Cherokee. The control module ran an internal self-check (checksum) on its memory and the calculated value did not match the stored value, indicating corrupted or failed internal memory. It is an internal module integrity fault. Typical repair costs on Jeep range from $300 to $1,000, depending on the specific model and root cause.
Common Causes of P0601
- •Corrupted or failed internal PCM/ECM memory
- •Faulty/aborted software reflash or programming
- •Low or unstable battery/system voltage during operation
- •Corroded PCM ground or power connectors
- •Defective control module
P0601 on Jeep by Model
Jeep Grand Cherokee(1 issue)
- Powertrain Control Module (PCM) Failure Causing Intermittent Warm-Weather Stalling and No-Start1999-2004
The WJ PCM (engine computer) can develop internal faults — often heat/temperature-related micro-cracks or solder failures — that cause intermittent stalling, hard-to-diagnose no-starts and driveability problems that come and go with ambient temperature. A well-known WJ case: a 2000 4.7L stalled only when outside air exceeded ~60F; a rebuilt/replaced PCM cured it after many other parts were replaced in vain.
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View P0601 across all makes →Frequently Asked Questions
What does P0601 mean on Jeep?▼
P0601 stands for "Internal Control Module Memory Check Sum Error." The control module ran an internal self-check (checksum) on its memory and the calculated value did not match the stored value, indicating corrupted or failed internal memory. It is an internal module integrity fault. On Jeep specifically, this code is documented across 1 model.
What causes P0601 on Jeep vehicles?▼
Common causes on Jeep: Corrupted or failed internal PCM/ECM memory, Faulty/aborted software reflash or programming, Low or unstable battery/system voltage during operation, Corroded PCM ground or power connectors, Defective control module. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0601 on a Jeep?▼
Repair costs on Jeep range from $300 to $1,000, depending on the specific model and root cause.
Which Jeep models have P0601 documented?▼
Au7o has documented P0601 on 1 Jeep model: Grand Cherokee.