Diagnostic Aids

• The system is designed for use of regular unleaded fuel to any ethanol concentration up to 85 percent (E85).
• When the ambient temperature drops below 14°F (-10°C), a winter blend of 70 percent (E70), or less is recommended for cold weather starting.
• The use of methanol fuels may set this DTC.
• Use of methanol fuel or high concentration of ethanol may cause DTCs P0169 and P0179 to set.
• Other contamination such as water and salts may cause this DTC to set.

The table below shows the maximum thresholds of a given ethanol content (percentage) versus the ambient temperature at which a DTC P0169 will set. See ETHANOL CONTENT VS. AMBIENT TEMPERATURE .