2.3L & 2.5L I4 Tech General discussion of 2.3L and 2.5L I4 Ford Ranger engines.

Check engine light

Old 01-07-2019
Thread Starter
Join Date: Jan 2019
Location: Marshville NC
Posts: 3
Check engine light

I need help with check engine light I put a new egr and a pdfe on my ranger and the check engine light is still what else can I check to solve the problem
Old 01-07-2019
2011Supercab's Avatar
Join Date: Jun 2018
Location: Everett, WA
Posts: 274
Year, engine and codes would help.
Old 01-07-2019
RF Veteran
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Join Date: Jan 2014
Location: Vancouver, BC
Posts: 12,570
Yes, ^^^^

What Year Ranger and what engine, 2.3l or 2.5l

And the specific codes, because there is more that one, have a look

P0400 Exhaust Gas Recirculation Flow Malfunction
P0401 Exhaust Gas Recirculation Flow Insufficient Detected
P0402 Exhaust Gas Recirculation Flow Excessive Detected
P0403 Exhaust Gas Recirculation Circuit Malfunction
P0404 Exhaust Gas Recirculation Circuit Range/Performance
P0405 Exhaust Gas Recirculation Sensor A Circuit Low
P0406 Exhaust Gas Recirculation Sensor A Circuit High
P0407 Exhaust Gas Recirculation Sensor B Circuit Low
P0408 Exhaust Gas Recirculation Sensor B Circuit High

P0470 Exhaust Pressure Sensor Malfunction
P0471 Exhaust Pressure Sensor Range/Performance
P0472 Exhaust Pressure Sensor Low
P0473 Exhaust Pressure Sensor High
P0474 Exhaust Pressure Sensor Intermittent
P0475 Exhaust Pressure Control Valve Malfunction
P0476 Exhaust Pressure Control Valve Range/Performance
P0477 Exhaust Pressure Control Valve Low
P0478 Exhaust Pressure Control Valve High
P0479 Exhaust Pressure Control Valve Intermittent

And there are more, and this is for 1995 and up only

1994 and older have completely different sets of codes, and again more than one for each system

Never EVER "Google" a code number, never EVER, lol
Always look up a code number on a FULL LIST of codes, so you can see what "other" codes the computer could have used instead of the one it did use
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