P0700 on RAM
Transmission Control System Malfunction
P0700 on RAM vehicles indicates transmission control system malfunction. Au7o has documented this code across 2 RAM models — most commonly on 1500, ProMaster City. P0700 is a general code indicating the transmission control module (TCM) has detected a fault somewhere in the transmission control system and has requested the check engine light be turned on. By itself it doesn't pinpoint the problem — it's an 'umbrella' code that tells you to look for additional, more specific transmission codes stored alongside it. The actual fault could be electrical, a sensor, a solenoid, or an internal transmission issue. You may notice harsh or delayed shifts, slipping, or the transmission going into a protective 'limp' mode. Typical repair costs on RAM range from $150 to $6,500, depending on the specific model and root cause.
Common Causes of P0700
- •Stored companion transmission codes pointing to the real fault
- •Faulty shift solenoid or pressure control solenoid
- •Low, dirty, or degraded transmission fluid
- •Faulty transmission speed or input/output sensor
- •Wiring, connector, or ground problems at the transmission
- •Failing transmission control module (TCM)
- •Internal transmission mechanical wear or clutch problems
- •Valve body fault or sticking valves
P0700 on RAM by Model
RAM 1500(2 issues)
- ZF 8-Speed Transmission Problems2013-2023
The ZF 8HP 8-speed automatic transmission can experience harsh shifting, hesitation, and jerky behavior. Some units have failed prematurely. Early model years (2013-2016) seem most affected. Multiple TSBs have been issued for software updates.
- ZF 8HP75 Transmission Harsh Shifting and Hesitation2019-2025
The 2019+ RAM 1500 uses the ZF 8HP75 8-speed automatic transmission which exhibits harsh shifting, delayed engagement, hesitation between gears, and rough downshifts. While the transmission itself is mechanically robust, the calibration and TCM (Transmission Control Module) programming have been problematic since launch. Stellantis has released multiple software updates via TSBs to address shift quality. TSB 21-018-22 REV.A addresses rough 1-2 upshift and 2-1 downshift. Some trucks require valve body replacement if software updates do not resolve the issue.
RAM ProMaster City(1 issue)
- ZF 9HP 9-Speed Automatic Transmission Problems2015-2022
The RAM ProMaster City uses the ZF 9HP48 9-speed automatic transmission which is plagued with harsh shifting, delayed engagement, gear hunting, and premature failure. The transmission struggles with low-speed maneuvers, often jerking or hesitating during parking lot driving. Some owners report the transmission failing to shift out of first gear or getting stuck in gear. Multiple TSBs have been issued for shift quality calibration (TSB 21-008-18 REV.C). The 9HP has been the subject of class-action lawsuits across multiple Stellantis vehicles. TCM software updates may help but many trucks need valve body replacement ($1,200-2,000) or complete transmission rebuild ($3,000-5,000).
Looking for P0700 on a different make?
View P0700 across all makes →Frequently Asked Questions
What does P0700 mean on RAM?▼
P0700 stands for "Transmission Control System Malfunction." P0700 is a general code indicating the transmission control module (TCM) has detected a fault somewhere in the transmission control system and has requested the check engine light be turned on. By itself it doesn't pinpoint the problem — it's an 'umbrella' code that tells you to look for additional, more specific transmission codes stored alongside it. The actual fault could be electrical, a sensor, a solenoid, or an internal transmission issue. You may notice harsh or delayed shifts, slipping, or the transmission going into a protective 'limp' mode. On RAM specifically, this code is documented across 2 models.
What causes P0700 on RAM vehicles?▼
Common causes on RAM: Stored companion transmission codes pointing to the real fault, Faulty shift solenoid or pressure control solenoid, Low, dirty, or degraded transmission fluid, Faulty transmission speed or input/output sensor, Wiring, connector, or ground problems at the transmission. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0700 on a RAM?▼
Repair costs on RAM range from $150 to $6,500, depending on the specific model and root cause.
Which RAM models have P0700 documented?▼
Au7o has documented P0700 on 2 RAM models: 1500, ProMaster City.