What causes fault code P010C?

• Most likely: Faulty Mass Air Flow (MAF) sensor (Bank B) • Likely: Contaminated sensor element (oil/dirt from aftermarket filters) • Possible: Open circuit or short to ground in the signal or reference wiring • Rare: Intake air leak after the sensor or severely clogged air filter

How do you fix fault code P010C?

STEP 1: Inspect the MAF B connector for corrosion and backed-out pins. Ensure the air filter is clean and correctly installed. STEP 2: Use a multimeter to verify reference voltage (typically 5V) and supply voltage (12V) with ignition ON. Check ground continuity (should be < 0.2 Ohms). STEP 3: Monitor Live Data using an OBD-II scanner. At idle, a 2.0L engine should show approx. 2-5 g/s. If the value stays at 0 g/s regardless of RPM, suspect sensor or wiring failure. STEP 4: Clean the sensor using dedicated MAF cleaner spray. If the code returns, replace the MAF sensor (OEM quality highly recommended).

Powertrain (Engine & Gearbox)Standard EOBD

P010C - Mass or Volume Air Flow B Circuit Low

Q: What does fault code P010C mean?

P010C is triggered when the Engine Control Unit (ECU) detects a signal from the secondary Mass Air Flow (MAF) 'B' sensor that is lower than the calibrated minimum threshold. In dual-bank or twin-intake systems, 'B' refers to the second flow meter. The ECU relies on this input to calculate engine load and fuel injection pulse width. A 'Circuit Low' condition typically indicates an electrical short to ground, a disconnected sensor, or a physical restriction preventing air from reaching the sensor element.

Q: What are the symptoms of fault code P010C?

• Check Engine Light (MIL) illumination • Engine enters 'Limp Home' mode (reduced power) • Rough idle or hesitation during acceleration • Increased fuel consumption and black smoke from exhaust

Last updated:1 February 2026

Related:Mass Air Flow sensor (MAF) Bank B, Air Filter, Engine Control Unit (ECU/ECM), Kablage och kontaktstycken, Insugsslangar

System

Powertrain (Engine & Gearbox)

Related Fault Codes

P0100

Mass or Volume Air Flow A Circuit Malfunction

P0101

Mass or Volume Air Flow Circuit Range/Performance Problem

P0102

Mass Air Flow (MAF) Circuit Low Input

P0103

Mass or Volume Air Flow Circuit High Input

Technical Description

P010C is triggered when the Engine Control Unit (ECU) detects a signal from the secondary Mass Air Flow (MAF) 'B' sensor that is lower than the calibrated minimum threshold. In dual-bank or twin-intake systems, 'B' refers to the second flow meter. The ECU relies on this input to calculate engine load and fuel injection pulse width. A 'Circuit Low' condition typically indicates an electrical short to ground, a disconnected sensor, or a physical restriction preventing air from reaching the sensor element.

Possible Causes

Faulty Mass Air Flow (MAF) sensor (Bank B)

Contaminated sensor element (oil/dirt from aftermarket filters)

Open circuit or short to ground in the signal or reference wiring

Intake air leak after the sensor or severely clogged air filter

Symptoms

Check Engine Light (MIL) illumination

Engine enters 'Limp Home' mode (reduced power)

Rough idle or hesitation during acceleration

Increased fuel consumption and black smoke from exhaust

Do you also have
other fault codes?

See how P010C connects with your other fault codes. Our advanced analysis tool identifies causal relationships and root causes directly.

Analyze multiple codes

P010C - Mass or Volume Air Flow B Circuit Low

Related Fault Codes

Technical Description

Possible Causes

Symptoms

Recommended Solution

Workflow

Mechanic's Tip

Do you also have
other fault codes?

P010C - Mass or Volume Air Flow B Circuit Low

Related Fault Codes

Technical Description

Possible Causes

Symptoms

Recommended Solution

Workflow

Mechanic's Tip

Do you also have other fault codes?

Do you also have
other fault codes?