Fault code P0701 – a step-by-step guide to diagnosing and fixing it

The meaning of error code P0701 – Transmission Control System Range/Performance

P0701: Causes, signs and repairs

Error code P0701 is displayed and the check engine light is on - what does this mean?

DTC P0701 is detected by the OBD/EOBD system when a general fault is detected in the transmission control module (TCM) or in the communication between the engine and transmission control unit. This trouble code affects the automatic transmission and can occur with different manufacturers, although the specific causes may vary depending on the vehicle model.

What causes can this fault code have?

Defective transmission control module (TCM)
Damaged wiring between the engine and transmission control unit
Loose or corroded plug connections
Faulty transmission sensors
Defective CAN bus communication
Low transmission oil quantity or contaminated ATF
Mechanical transmission damage
Software error in the control module
Voltage problems in the vehicle electrics

Which symptoms occur in parallel with error code P0701?

Shifting problems: The automatic transmission shifts irregularly or not at all
Emergency running program: The transmission gets stuck in a fixed gear
Starting problems: The engine is difficult to start or stalls when idling
Jerky driving: The engine runs unevenly and acceleration is jerky
Transmission warning light: Additional warning lights in the dashboard
Loss of power: Reduced engine power and poor acceleration

How can the problem with error code P0701 be resolved?

Fixing the P0701 error code requires a systematic diagnosis of the transmission and engine control unit.
Perform a complete OBD diagnosis and read out all stored fault codes, then delete the fault code and perform a test drive
Check transmission oil level and condition, change or top up ATF if necessary and carry out transmission flush
Check wiring between TCM and ECM for damage, breaks or corrosion and repair or replace defective cables
Clean all plug connections on the transmission control module, treat contacts with contact spray and connect firmly
Test transmission control module and replace with new or used TCM if defective, then have programmed
Check CAN bus system with diagnostic device and repair or replace corresponding modules in the event of communication errors

FAQ - Frequently asked questions about DTC P0701

Can I continue driving with error code P0701?

Short journeys are possible, but you should take the vehicle to a workshop as soon as possible. The P0701 code can lead to serious transmission damage if it is ignored.

How much does it cost to repair error code P0701?

The costs vary depending on the cause: transmission oil change €150-300, cable repair €200-500, TCM replacement €800-2000. A precise diagnosis costs around €100-150.

Is the P0701 error code a serious problem?

Yes, the P0701 EOBD code should be taken seriously as it can affect the entire transmission. If left untreated, it can lead to costly transmission damage.

Can I repair the P0701 code myself?

Simple measures such as oil changes are possible, but diagnosing the P0701 trouble code requires professional equipment. TCM programming must be carried out in the workshop.

How often does the P0701 trouble code occur?

The P0701 DTC is a common fault code in automatic transmissions, especially in vehicles with higher mileage over 150,000 km.

Does the P0701 fault code disappear by itself?

No, the P0701 code does not disappear by itself. Even after deletion, it will return if the underlying problem is not rectified.

Vehicles in which the error code P0701 occurs most frequently

Error code P0701 is a cross-manufacturer OBD code for transmission control problems and can occur in various automatic transmissions, but is most common in the following vehicles:

Chrysler: 300C, Sebring, Pacifica, Town & Country (2004-2010)
Dodge: Charger, Magnum, Caravan, Durango, Ram 1500 (2005-2012)
Jeep: Grand Cherokee, Commander, Compass, Patriot (2006-2014)
Mercedes-Benz: C-Class, E-Class, ML-Class, Sprinter (2000-2008)
BMW: 3 Series, 5 Series, 7 Series, X3, X5 (2001-2009)
Audi: A4, A6, A8, Q7, Allroad (2002-2010)
Volkswagen: Touareg, Phaeton, Passat, Touran (2003-2011)
Ford: Explorer, F-150, Expedition, Mustang (2004-2012)
General Motors: Silverado, Tahoe, Suburban, Corvette (2003-2009)
If the code P0701 occurs in your vehicle, you should first have a full diagnosis carried out, as the specific causes can vary depending on the manufacturer and transmission type. German premium manufacturers in particular often have complex electronic systems that require special know-how. An early repair can prevent expensive consequential damage to the transmission.

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