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Home / Diagnostic Decoder / Powertrain System / Code P0106
System: Powertrain (P-Code) Coverage: SAE Standard (Generic) Fault Family: map_sensor_circuit

Code P0106: Manifold Absolute Pressure/Barometric Pressure Sensor Circuit Range/Performance

Diagnostic & Technical Explanation
Code P0106 (Manifold Absolute Pressure/Barometric Pressure Sensor Circuit Range/Performance) sets when the ECM sees an open, shorted, or implausible voltage from the MAP/barometric pressure sensor circuit, or the reading is simply too low for the current altitude. Causes are a cracked or oil-fouled vacuum port, a failed sensor element, or damaged sensor wiring.

Probability-Ranked Repair Procedures (3 Ranked Fixes)

Rank #1

Inspect and clean MAP sensor vacuum port

Easy DIY
Parts Estimate: $5.0–$20.0 USD Labor Estimate: 0.5 Shop Hours
  1. 1. Locate the MAP sensor on the intake manifold
  2. 2. Remove and inspect the vacuum port for oil or debris
  3. 3. Clean the port and sensor housing
  4. 4. Reinstall and clear codes
Required Replacement Parts: 🔧 Throttle body/MAP sensor cleaner
Rank #2

Replace MAP/barometric pressure sensor

Easy DIY
Parts Estimate: $20.0–$90.0 USD Labor Estimate: 0.4 Shop Hours
  1. 1. Unplug the sensor connector
  2. 2. Remove the sensor from the manifold or its remote mount
  3. 3. Install the replacement sensor with a new O-ring
  4. 4. Clear codes and verify reading against known altitude/barometric baseline
Required Replacement Parts: 🔧 Manifold absolute pressure (MAP) sensor · 🔧 MAP sensor O-ring seal
Rank #3

Repair MAP sensor circuit wiring

Professional Required
Parts Estimate: $10.0–$60.0 USD Labor Estimate: 1.2 Shop Hours
  1. 1. Back-probe the 5V reference, signal, and ground at the connector
  2. 2. Voltage-drop test each leg back to the ECM
  3. 3. Repair chafed or corroded conductors with heat-shrink splices
  4. 4. Confirm signal tracks vacuum/boost changes smoothly
Required Replacement Parts: 🔧 Automotive wiring repair kit (solder + heat-shrink)

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