Codes for AF sensor and APP sensor
I took my car to Auto Zone to have the codes read. Yes Auto Zone. First I am tight with my $ and 2nd there are not too many Acura Dealers close by in Iowa.
I thought it might be my APP sensor going bad after reading all the posts. This is what they came up with: P2197 P2195 P2138 Lean AF ratio-Vacuum Leak- low fuel pressure Check other codes first Failed AF sensor App Senor I am pretty sure I will replace the APP sensor but what is the AF sensor and is it easy to replace? Any help is appreciated. Thanks |
Couldn't get the link to work off of ISIS, sorry. So here's the copy and pasted version.
Service Bulletin 2004 American Honda Motor Co., Inc. – All Rights Reserved BTB 27088-27438 (0407) 1 of 2 CUSTOMER INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not assume this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact an authorized Acura automobile dealer. July 23, 2004 04-016 Applies To: 2004 TL – ALL MIL Comes On With DTC P2195 or P2197 (Supersedes 04-016, dated May 21, 2004) SYMPTOM The MIL is on, and DTC P2195 (rear air fuel ratio sensor signal stuck lean) or P2197 (front air fuel ratio sensor signal stuck lean) is set. PROBABLE CAUSE The ECM/PCM software incorrectly interprets sensor inputs, causing the codes to set. CORRECTIVE ACTION Using the HDS, update the ECM/PCM. WARRANTY CLAIM INFORMATION In warranty: The normal warranty applies. Failed Part: P/N 37820-RDA-A04 Defect Code: 07201 Symptom Code: 03203 Skill Level: Repair Technician Out of warranty: Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Parts and Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work. REPAIR PROCEDURE NOTE: • Before you update an ECM/PCM, make sure the battery in the vehicle is fully charged. • To prevent ECM/PCM damage, do not operate anything electrical (audio system, brakes, A/C, power windows, moonroof, etc.) during the update. 1. Use the HDS to read and clear the DTCs. 2. Use the HDS to update the ECM/PCM: • If not already done, load software update 1.012.023 or later onto the HDS. • In the HDS main screen, click on the reprogramming icon. • In the System Selection menu, select PGM-FI, and click on the confirmation check mark. • In the screen that shows the new program, click on the confirmation check mark. • In the Confirm the Control Module Update screen, click Yes. • When the programming is complete, click on the confirmation check mark. NOTE: Do not disconnect the HDS, and do not turn off the ignition switch. • In the Updating Honda Control Modules with HDS Tablet screen, click on the confirmation check mark. • Wait until the programming is complete. This programming takes about 10 minutes. OP# Description FRT Template ID 123503 Retrieve the DTC(s), and clear the codes with the HDS 0.3 04-016A 125517 Update the ECM/PCM software with the HDS 0.3 122505 Do CKP pattern learn 0.3 REPROGRAMMING ICON 2 of 2 04-016 3. Do the ECM/PCM idle learn procedure: • Make sure all electrical items (A/C, audio, rear window defogger, lights, etc.) are off. • With the HDS, do the ECM/PCM RESET and CKP PATTERN CLEAR. • Turn the ignition switch to the ON (II) position for 30 seconds. • Start the engine, and let it warm up to its operating temperature (the cooling fans cycle twice). • Let the engine idle (throttle closed and all electrical items off) for 10 minutes. 4. Do the low-rpm CKP pattern learn: • Test-drive the vehicle on a level road: With the A/T in the Sequential Sportshift mode and in second gear, or the M/T in second or third gear, decelerate (with the throttle fully closed) from an engine speed of 2,500 rpm down to 1,000 rpm. • Stop the vehicle, and put the transmission into Park or Neutral. Set the parking brake. Do not turn off the ignition. 5. Connect the HDS to the DLC, and check the status of PULSER F/B LEARN: • On the Selection Menu, select PGM-FI. • On the Mode Menu, select Data List. • Check the value of PULSER F/B LEARN. • If the value is Completed, go to step 6. • If the value is Not Completed, be sure the engine is at normal operating temperature (the ECT SENSOR (1) value is 176 or higher), and repeat step 4. 6. Do the high-rpm CKP pattern learn: NOTE: The low-rpm CKP pattern learn must be completed before you do the high-rpm CKP pattern learn. • Test-drive the vehicle on a level road: With the A/T in low gear, or the M/T in first gear, decelerate (with the throttle fully closed) from an engine speed of 5,000 rpm down to 3,000 rpm. • Stop the vehicle, and put the transmission into Park or Neutral. Set the parking brake. Do not turn off the ignition. 7. Connect the HDS to the DLC (if not already connected), and do this: • On the Selection Menu, select PGM-FI. • On the Mode Menu, select Data List. 8. Check the value of PULSER F/B LEARN (HIGH RPM): • If the value is Completed, you are finished. Disconnect the HDS. • If the value is Not Completed, be sure the engine is at normal operating temperature (the ECT SENSOR (1) value is 176 or higher), and repeat steps 4 thru 7. ------------------ As for the APP sensor code, as your research shows, it's usually safe to say it's the sensor itself. Easy to replace, I've done quite a few at work. Good luck! -- Kevin |
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