P061B

What it means

P061B is the generic code for an Internal Control Module Torque Calculation Performance fault. The engine control module continuously calculates the torque the engine should be producing from driver demand and sensor inputs, and cross-checks it with its monitoring software. If the calculated torque does not agree with the expected or measured value, or the internal plausibility check fails, the code is set.

Symptoms

• Engine warning light on
• Reduced power or limp mode
• Poor or delayed throttle response
• Rough running or unstable idle
• Erratic or harsh gear changes on automatic cars
• Cruise control or stability systems unavailable

Possible causes

• Faulty or implausible input from the throttle pedal, throttle body, mass airflow, manifold pressure or crank/cam sensorslikely
• Air leaks, intake restrictions or boost leaks causing the measured air charge to differ from the torque modellikely
• Wiring or connector faults, poor earths or low battery or charging voltage affecting the control module or sensorspossible
• Another engine fault such as misfire, fuel delivery or ignition problems causing real torque to differ from the calculationpossible
• Outdated or faulty control module software calibration (check for manufacturer updates applicable to the model and engine)possible
• Internal fault in the engine control modulerare

How to diagnose

1. Read all stored and pending codes and freeze frame data, and note any other engine, throttle, sensor or transmission codes, as these should be diagnosed first.
2. Check battery condition, charging voltage and the main power and earth connections to the engine control module.
3. Inspect the wiring and connectors for the throttle pedal, throttle body and airflow or pressure sensors for damage, corrosion or water ingress.
4. Inspect the intake system, hoses, clamps and any charge pipework for leaks, splits or blockages, including the air filter.
5. View live data and compare pedal position, throttle angle, airflow, manifold pressure and engine load against expected values at idle and under load.
6. Check for misfires, fuel trim problems or fuel pressure faults that could alter actual engine output.
7. Check whether a manufacturer software update or technical bulletin exists for the vehicle and code.
8. If all inputs and supplies are proven good, test the control module power, grounds and communications before considering the module itself.

How to fix

• Repair or replace any faulty throttle pedal, throttle body or sensor that is giving implausible readings.
• Repair air or boost leaks and replace blocked or damaged intake components.
• Repair damaged wiring, connectors or earths, and correct battery or charging system faults.
• Fix any underlying misfire, fuel or ignition fault, then clear the code and retest.
• Update the control module software if an applicable revised calibration is available for the vehicle.
• Repair or replace the engine control module only after all other causes are ruled out, and have it coded or programmed as the manufacturer requires.

Can I keep driving?

Nearby codes

• P061AGenericInternal Control Module Torque Performance
• P061CGenericInternal Control Module Engine RPM Performance