Faulty or contaminated mass airflow sensor sending incorrect air charge information; Malfunctioning throttle position sensor or accelerator pedal position sensor; Wiring damage or corrosion in the circuits between the engine control module and transmission control module; A software calibration issue or outdated PCM firmware affecting torque calculation; Failed or failing engine control module or transmission control module; Mechanical issues such as a slipping transmission or restricted exhaust affecting actual torque delivery; Low battery voltage or poor grounds causing erratic sensor signals

DTC codes / C00xx · Brakes, steering and suspension / C0073

C0073Delivered Driving Torque

Q: What does code C0073 mean?

Delivered Driving Torque. This code indicates that the powertrain control module has detected an implausible signal or out-of-range value from the delivered driving torque calculation, which is the actual torque output at the wheels after accounting for engine output and driveline losses. The computer sets this code when the calculated delivered torque does not match expected values from other sensors such as engine speed, throttle position, and vehicle speed.

This code indicates that the powertrain control module has detected an implausible signal or out-of-range value from the delivered driving torque calculation, which is the actual torque output at the wheels after accounting for engine output and driveline losses. The computer sets this code when the calculated delivered torque does not match expected values from other sensors such as engine speed, throttle position, and vehicle speed.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaBrakes, steering and suspension

Symptoms you may notice

Illumination of the check engine light or service engine soon light, often with no other noticeable symptoms
Reduced engine performance or a limp mode condition where the vehicle limits power
Harsh or delayed transmission shifts due to incorrect torque signal interpretation
Unexpected activation of the electronic stability control or traction control system
Poor fuel economy or inconsistent acceleration feel

Common causes, most likely first

Faulty or contaminated mass airflow sensor sending incorrect air charge information
Malfunctioning throttle position sensor or accelerator pedal position sensor
Wiring damage or corrosion in the circuits between the engine control module and transmission control module
A software calibration issue or outdated PCM firmware affecting torque calculation
Failed or failing engine control module or transmission control module
Mechanical issues such as a slipping transmission or restricted exhaust affecting actual torque delivery
Low battery voltage or poor grounds causing erratic sensor signals

How to diagnose and fix it

Connect a scan tool and record all freeze frame data and stored codes to understand the conditions when the fault set
Visually inspect the mass airflow sensor, throttle body, and related wiring for contamination, damage, or loose connections
Check battery voltage and ground connections to ensure stable power supply to the control modules
Use a scan tool to monitor live data for delivered torque, engine torque, and throttle position to identify implausible values
Perform a wiggle test on the wiring harness between the ECM and TCM while watching live data for signal interruptions
Reprogram or update the PCM calibration if a known software issue exists for the vehicle
Replace the faulty sensor or module only after confirming the diagnosis with pinpoint tests

What the torque calculation hides from you

A dirty mass airflow sensor often skews the calculated torque without setting a mass airflow code, so cleaning it is a smart first step.
The code can be set by a weak battery or poor ground that causes momentary voltage drops, so always check power and ground integrity before replacing parts.
A slipping transmission can cause the delivered torque to deviate from expected values, so inspect transmission fluid condition and operation.
Some vehicles require a relearn or calibration procedure after battery replacement or module repair, and skipping it can trigger this code.
The code does not always mean the torque converter or transmission is failing; it often points to sensor signal errors rather than mechanical failure.

Can I keep driving with C0073?

You can usually drive the vehicle with this code, but avoid heavy acceleration or towing until it is diagnosed, as the computer may be limiting power or shift quality. If the vehicle enters limp mode or shifts harshly, seek service promptly to prevent further damage.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.