O_o

The PID query is sent to the vehicle on the CAN bus at ID 7DFh, using 8 data bytes. The bytes are:

Reponse

The vehicle responds to the PID query on the CAN bus with two messages, at IDs 7E8h and 7E9h. For standard (SAE) messages, the two messages are identical. For vehicle specific messages, they differ. Even though the number of bytes in the returned value is variable, the message uses 8 data bytes regardless. The bytes are:

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.lang.time;

import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;

/**
 * <p>Date and time formatting utilities and constants.</p>
 *
 * <p>Formatting is performed using the
 * {@link org.apache.commons.lang.time.FastDateFormat} class.</p>
 *
 * @author Apache Ant - DateUtils
 * @author <a href="mailto:sbailliez@apache.org">Stephane Bailliez</a>
 * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
 * @author Stephen Colebourne
 * @author <a href="mailto:ggregory@seagullsw.com">Gary Gregory</a>
 * @since 2.0
 * @version $Id: DateFormatUtils.java 437554 2006-08-28 06:21:41Z bayard $
 */
public class DateFormatUtils {

    /**
     * ISO8601 formatter for date-time without time zone.
     * The format used is <tt>yyyy-MM-dd'T'HH:mm:ss</tt>.
     */
    public static final FastDateFormat ISO_DATETIME_FORMAT
            = FastDateFormat.getInstance("yyyy-MM-dd'T'HH:mm:ss");

    /**
     * ISO8601 formatter for date-time with time zone.
     * The format used is <tt>yyyy-MM-dd'T'HH:mm:ssZZ</tt>.
     */
    public static final FastDateFormat ISO_DATETIME_TIME_ZONE_FORMAT
            = FastDateFormat.getInstance("yyyy-MM-dd'T'HH:mm:ssZZ");

    /**
     * ISO8601 formatter for date without time zone.
     * The format used is <tt>yyyy-MM-dd</tt>.
     */
    public static final FastDateFormat ISO_DATE_FORMAT
            = FastDateFormat.getInstance("yyyy-MM-dd");

    /**
     * ISO8601-like formatter for date with time zone.
     * The format used is <tt>yyyy-MM-ddZZ</tt>.
     * This pattern does not comply with the formal ISO8601 specification
     * as the standard does not allow a time zone  without a time.
     */
    public static final FastDateFormat ISO_DATE_TIME_ZONE_FORMAT
            = FastDateFormat.getInstance("yyyy-MM-ddZZ");

    /**
     * ISO8601 formatter for time without time zone.
     * The format used is <tt>'T'HH:mm:ss</tt>.
     */
    public static final FastDateFormat ISO_TIME_FORMAT
            = FastDateFormat.getInstance("'T'HH:mm:ss");

    /**
     * ISO8601 formatter for time with time zone.
     * The format used is <tt>'T'HH:mm:ssZZ</tt>.
     */
    public static final FastDateFormat ISO_TIME_TIME_ZONE_FORMAT
            = FastDateFormat.getInstance("'T'HH:mm:ssZZ");

    /**
     * ISO8601-like formatter for time without time zone.
     * The format used is <tt>HH:mm:ss</tt>.
     * This pattern does not comply with the formal ISO8601 specification
     * as the standard requires the 'T' prefix for times.
     */
    public static final FastDateFormat ISO_TIME_NO_T_FORMAT
            = FastDateFormat.getInstance("HH:mm:ss");

    /**
     * ISO8601-like formatter for time with time zone.
     * The format used is <tt>HH:mm:ssZZ</tt>.
     * This pattern does not comply with the formal ISO8601 specification
     * as the standard requires the 'T' prefix for times.
     */
    public static final FastDateFormat ISO_TIME_NO_T_TIME_ZONE_FORMAT
            = FastDateFormat.getInstance("HH:mm:ssZZ");

    /**
     * SMTP (and probably other) date headers.
     * The format used is <tt>EEE, dd MMM yyyy HH:mm:ss Z</tt> in US locale.
     */
    public static final FastDateFormat SMTP_DATETIME_FORMAT
            = FastDateFormat.getInstance("EEE, dd MMM yyyy HH:mm:ss Z", Locale.US);

    //-----------------------------------------------------------------------
    /**
     * <p>DateFormatUtils instances should NOT be constructed in standard programming.</p>
     *
     * <p>This constructor is public to permit tools that require a JavaBean instance
     * to operate.</p>
     */
    public DateFormatUtils() {
        super();
    }

    /**
     * <p>Formats a date/time into a specific pattern using the UTC time zone.</p>
     *
     * @param millis  the date to format expressed in milliseconds
     * @param pattern  the pattern to use to format the date
     * @return the formatted date
     */
    public static String formatUTC(long millis, String pattern) {
        return format(new Date(millis), pattern, DateUtils.UTC_TIME_ZONE, null);
    }

    /**
     * <p>Formats a date/time into a specific pattern using the UTC time zone.</p>
     *
     * @param date  the date to format
     * @param pattern  the pattern to use to format the date
     * @return the formatted date
     */
    public static String formatUTC(Date date, String pattern) {
        return format(date, pattern, DateUtils.UTC_TIME_ZONE, null);
    }
   
    /**
     * <p>Formats a date/time into a specific pattern using the UTC time zone.</p>
     *
     * @param millis  the date to format expressed in milliseconds
     * @param pattern  the pattern to use to format the date
     * @param locale  the locale to use, may be <code>null</code>
     * @return the formatted date
     */
    public static String formatUTC(long millis, String pattern, Locale locale) {
        return format(new Date(millis), pattern, DateUtils.UTC_TIME_ZONE, locale);
    }

    /**
     * <p>Formats a date/time into a specific pattern using the UTC time zone.</p>
     *
     * @param date  the date to format
     * @param pattern  the pattern to use to format the date
     * @param locale  the locale to use, may be <code>null</code>
     * @return the formatted date
     */
    public static String formatUTC(Date date, String pattern, Locale locale) {
        return format(date, pattern, DateUtils.UTC_TIME_ZONE, locale);
    }
   
    /**
     * <p>Formats a date/time into a specific pattern.</p>
     *
     * @param millis  the date to format expressed in milliseconds
     * @param pattern  the pattern to use to format the date
     * @return the formatted date
     */
    public static String format(long millis, String pattern) {
        return format(new Date(millis), pattern, null, null);
    }

    /**
     * <p>Formats a date/time into a specific pattern.</p>
     *
     * @param date  the date to format
     * @param pattern  the pattern to use to format the date
     * @return the formatted date
     */
    public static String format(Date date, String pattern) {
        return format(date, pattern, null, null);
    }
   
    /**
     * <p>Formats a date/time into a specific pattern in a time zone.</p>
     *
     * @param millis  the time expressed in milliseconds
     * @param pattern  the pattern to use to format the date
     * @param timeZone  the time zone  to use, may be <code>null</code>
     * @return the formatted date
     */
    public static String format(long millis, String pattern, TimeZone timeZone) {
        return format(new Date(millis), pattern, timeZone, null);
    }

    /**
     * <p>Formats a date/time into a specific pattern in a time zone.</p>
     *
     * @param date  the date to format
     * @param pattern  the pattern to use to format the date
     * @param timeZone  the time zone  to use, may be <code>null</code>
     * @return the formatted date
     */
    public static String format(Date date, String pattern, TimeZone timeZone) {
        return format(date, pattern, timeZone, null);
    }

    /**
     * <p>Formats a date/time into a specific pattern in a locale.</p>
     *
     * @param millis  the date to format expressed in milliseconds
     * @param pattern  the pattern to use to format the date
     * @param locale  the locale to use, may be <code>null</code>
     * @return the formatted date
     */
    public static String format(long millis, String pattern, Locale locale) {
        return format(new Date(millis), pattern, null, locale);
    }

    /**
     * <p>Formats a date/time into a specific pattern in a locale.</p>
     *
     * @param date  the date to format
     * @param pattern  the pattern to use to format the date
     * @param locale  the locale to use, may be <code>null</code>
     * @return the formatted date
     */
    public static String format(Date date, String pattern, Locale locale) {
        return format(date, pattern, null, locale);
    }

    /**
     * <p>Formats a date/time into a specific pattern in a time zone  and locale.</p>
     *
     * @param millis  the date to format expressed in milliseconds
     * @param pattern  the pattern to use to format the date
     * @param timeZone  the time zone  to use, may be <code>null</code>
     * @param locale  the locale to use, may be <code>null</code>
     * @return the formatted date
     */
    public static String format(long millis, String pattern, TimeZone timeZone, Locale locale) {
        return format(new Date(millis), pattern, timeZone, locale);
    }

    /**
     * <p>Formats a date/time into a specific pattern in a time zone  and locale.</p>
     *
     * @param date  the date to format
     * @param pattern  the pattern to use to format the date
     * @param timeZone  the time zone  to use, may be <code>null</code>
     * @param locale  the locale to use, may be <code>null</code>
     * @return the formatted date
     */
    public static String format(Date date, String pattern, TimeZone timeZone, Locale locale) {
        FastDateFormat df = FastDateFormat.getInstance(pattern, timeZone, locale);
        return df.format(date);
    }

}